{"title":"Relays,Switches and Buttons","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"5v-two-2-channel-relay-module-with-optocoupler","title":"1C10  5V Two 2 Channel Relay Module With optocoupler","description":"\u003ch3 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eDescription\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe 2 Channels Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load. It is designed to interface with microcontroller such as Arduino, PIC and etc. The relays terminal (COM, NO and NC) is being brought out with screw terminal. It also comes with a LED to indicate the status of relay.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpecification\u003c\/strong\u003e:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDigital output controllable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCompatible with any 5V microcontroller such as Arduino.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eRated through-current: 10A (NO) 5A (NC)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eControl signal: TTL level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMax. switching voltage 250VAC\/30VDC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMax. switching current 10A\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSize: 50mm x 38mm x 17mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePackage includes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1 x 2 Channels 5V Relay Module\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 id=\"twochannel-relay-module-pinout\"\u003ePinout\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"relay module pinout\" height=\"336\" width=\"567\" src=\"https:\/\/lastminuteengineers.com\/wp-content\/uploads\/arduino\/relay-module-pinout.png\" decoding=\"async\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp id=\"control-pins\"\u003e\u003cstrong\u003eControl Pins:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-red\"\u003eVCC\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003epin provides power to the built-in optocouplers and, optionally, the relay’s electromagnet (if you keep the jumper in place). Connect it to the 5V pin on the Arduino.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-black\"\u003eGND\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eis the common ground pin.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-yellow\"\u003eIN1 \u0026amp; IN2\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003epins control the relay. These are active low pins, which means that pulling them LOW activates the relay and pulling them HIGH deactivates it.\u003c\/p\u003e\n\u003cp id=\"power-supply-selection-pins\"\u003e\u003cstrong\u003ePower Supply Selection Pins:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-purple\"\u003eJD-VCC\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eprovides power to the relay’s electromagnet. When the jumper is in place, JD-VCC is shorted to VCC, allowing the electromagnets to be powered by the Arduino’s 5V line. Without the jumper cap, you’d have to connect it to a separate 5V power source.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-red\"\u003eVCC\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003epin is shorted to the JD-VCC pin with the jumper cap on. Keep this pin disconnected if you remove the jumper.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-black\"\u003eGND\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eis the common ground pin.\u003c\/p\u003e\n\u003cp id=\"output-terminals\"\u003e\u003cstrong\u003eOutput Terminals:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-gray\"\u003eCOM\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eterminal connects to the device you intend to control.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-blue\"\u003eNC\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eterminal is normally connected to the COM terminal, unless you activate the relay, which breaks the connection.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pinout pinout-green\"\u003eNO\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eterminal is normally open, unless you activate the relay that connects it to the COM terminal.\u003c\/p\u003e\n\u003ch3\u003eWiring\u003c\/h3\u003e\n\u003cp\u003e\u003cb data-mce-fragment=\"1\"\u003eWarning:\u003c\/b\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThis board interacts with HIGH AC voltage. Improper or incorrect use could result in serious injury or death. Therefore, it is intended for people who are familiar with and knowledgeable about HIGH AC voltage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBegin by connecting the module’s VCC pin to the Arduino’s 5V pin and the GND pin to ground. We will only be using one relay for our experiment, so connect digital pin #6 to the IN1 input pin.\u003c\/p\u003e\n\u003cp\u003eYou’ll also need to connect the relay module to the AC-powered device you want to control, in this case, a lamp. You’ll need to cut your live AC line and connect one end of the cut wire (coming from the wall) to COM and the other to NC or NO, depending on what you want your device’s initial state to be.\u003c\/p\u003e\n\u003cp\u003eIf you want to keep your device off most of the time and turn it on occasionally, connect the other end of the wire to NO. Otherwise, connect it to NC.\u003c\/p\u003e\n\u003cp\u003eFor this project, we want our lamp to be off at first and then turn on when we activate the relay, so we will connect one end of the wire to COM and the other to NO.\u003c\/p\u003e\n\u003cp\u003eThe following illustration shows the wiring.\u003cimg loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lastminuteengineers.com\/wp-content\/uploads\/arduino\/wiring-relay-module-with-arduino.png\" width=\"693\" height=\"541\" alt=\"wiring relay module with arduino\" data-mce-src=\"https:\/\/lastminuteengineers.com\/wp-content\/uploads\/arduino\/wiring-relay-module-with-arduino.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eWe left the jumper in place in the above wiring diagram, so the relay’s electromagnet will be driven directly from the Arduino. In this case, the relay module and the Arduino will not be physically isolated.\u003c\/p\u003e\n\u003cp\u003eIf you want to keep them isolated, you must provide a separate 5V power supply voltage to the JD-VCC and GND. The wiring below shows how to accomplish this.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/lastminuteengineers.com\/wp-content\/uploads\/arduino\/wiring-relay-module-with-arduino-and-external-supply.png\" alt=\"wiring relay module with arduino and external supply\" data-mce-src=\"https:\/\/lastminuteengineers.com\/wp-content\/uploads\/arduino\/wiring-relay-module-with-arduino-and-external-supply.png\"\u003e\u003c\/p\u003e\n\u003ch3 id=\"arduino-example-code\"\u003eCode\u003c\/h3\u003e\n\u003cp\u003eControlling a relay module with the Arduino is as easy as controlling an LED. Here’s a simple code that will activate the relay for 3 seconds and then deactivate it for 3 seconds.\u003c\/p\u003e\n\u003cpre\u003e\u003ccode class=\"language-c\"\u003eint RelayPin = 6;\n\nvoid setup() {\n\t\/\/ Set RelayPin as an output pin\n\tpinMode(RelayPin, OUTPUT);\n}\n\nvoid loop() {\n\t\/\/ Let's turn on the relay...\n\tdigitalWrite(RelayPin, LOW);\n\tdelay(3000);\n\t\n\t\/\/ Let's turn off the relay...\n\tdigitalWrite(RelayPin, HIGH);\n\tdelay(3000);\n}\n\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003ch3 id=\"code-explanation\"\u003eCode Explanation:\u003c\/h3\u003e\n\u003cp\u003eThe sketch begins by declaring the pin to which the relay module’s input pin is connected.\u003c\/p\u003e\n\u003cdiv class=\"example\"\u003e\n\u003cpre\u003e\u003ccode\u003e\u003cspan class=\"kwd\"\u003eint\u003c\/span\u003e RelayPin = \u003cspan class=\"lit\"\u003e6\u003c\/span\u003e;\u003c\/code\u003e\u003c\/pre\u003e\n\u003c\/div\u003e\n\u003cp\u003eIn the setup function, we configure the input pin to behave as an output.\u003c\/p\u003e\n\u003cdiv class=\"example\"\u003e\n\u003cpre\u003e\u003ccode\u003e\u003cspan class=\"func\"\u003epinMode\u003c\/span\u003e(RelayPin, OUTPUT);\u003c\/code\u003e\u003c\/pre\u003e\n\u003c\/div\u003e\n\u003cp\u003eIn the loop function, we turn the device ON\/OFF by pulling the relay pin LOW\/HIGH.\u003c\/p\u003e\n\u003cp\u003e\u003ccode\u003edigitalWrite(RelayPin, LOW)\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003epulls the pin LOW, whereas\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003edigitalWrite(RelayPin, HIGH)\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003epulls the pin HIGH.\u003c\/p\u003e\n\u003cpre\u003e\u003ccode\u003e\u003cspan class=\"func\"\u003edigitalWrite\u003c\/span\u003e(RelayPin, LOW);\n\u003cspan class=\"func\"\u003edelay\u003c\/span\u003e(\u003cspan class=\"lit\"\u003e3000\u003c\/span\u003e);\n\n\u003cspan class=\"func\"\u003edigitalWrite\u003c\/span\u003e(RelayPin, HIGH);\n\u003cspan class=\"func\"\u003edelay\u003c\/span\u003e(\u003cspan class=\"lit\"\u003e3000\u003c\/span\u003e);\u003c\/code\u003e\u003c\/pre\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218198687847,"sku":"B0908B","price":20.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/item_XXL_8437823_8176770.jpg?v=1530919747"},{"product_id":"joystick-module-shield-ps2-joystick-game-controller","title":"2C17  JoyStick Module Shield PS2 Joystick Game Controller","description":"\u003cdiv id=\"overview\" class=\"active pinfobox\" style=\"font-size: 11px; color: #333333; font-family: Verdana, Tahoma, Arial; line-height: normal;\"\u003e\n\u003cdiv class=\"pinfo_content pr\" style=\"position: relative; padding: 20px 0px 0px;\"\u003e\n\u003cdiv id=\"overview-detailinfo\" class=\"infoContainer\"\u003e\n\u003cdiv style=\"font-size: 10pt; font-family: Arial;\"\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe JoyStick Module Shield is a hardware platform that allows users to build and program their own game controllers. The shield is compatible with the PlayStation 2 (PS2) joystick, which is a familiar and commonly used input device for gaming. This combination of hardware and software allows for seamless integration into a wide range of gaming applications, including media centers, emulators, and homebrews. The Joystick Game Controller offers a unique and engaging experience for gamers who want to customize their input devices to suit their specific needs and preferences.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable width=\"550px\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\" style=\"width: 898px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eKEYES\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eKY-023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eFR4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eThrough the Arduino controller programming, sensor expansion board inserting to complete creative control interactive works; Suitable for Arduino UNO, Arduino UNO R3, Arduino 2560, Arduino 2560 R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003ePS2 joystick module, electronic building standard interface and 2.54mm interface leads to pin; Cross rocker is a bidirectional 10K resistor, with rocker in different directions, the resistance changes with tap; This module uses 5V power supply, original state of X, Y readout voltage is about 2.5V, when press down the arrow, the voltage value increases up to 5V; press the arrow in the opposite direction, voltage decreases, the minimum is 0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eArduino development\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eEnglish Manual\/Spec\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003eOther\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eA product for Arduino that works with official Arduino boards.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003ctd style=\"margin: 0px; width: 250px;\"\u003e\u003cstrong\u003ePacking List\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"margin: 0px;\"\u003eJoyStick Module Shield PS2 Joystick Game Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"specification\" class=\"active pinfobox\" style=\"font-size: 11px; color: #333333; font-family: Verdana, Tahoma, Arial; line-height: normal;\"\u003e\n\u003cdiv class=\"pinfo_content pr\" style=\"position: relative; padding: 20px 0px 0px;\"\u003e\n\u003cdiv id=\"specification-detailinfo\" class=\"infoContainer\"\u003e\u003cspan face=\"Arial\" size=\"2\" style=\"font-family: Arial; font-size: small;\"\u003eDimensions: 1.57 in x 1.06 in x 1.34 in (4.0 cm x 2.7 cm x 3.4 cm)\u003cbr\u003eWeight: 0.39 oz (11 g)\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218220249191,"sku":"B0923B","price":15.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/item_XXL_8171236_7663813.jpg?v=1530919912"},{"product_id":"keypad-matrix-4-x-4-array-16-key-membrane-switch-keyboard","title":"1B14 Keypad Matrix 4 x 4 Array 16 Key Membrane Switch Keyboard","description":"\u003ch3\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cp\u003eThis is a 4x4 matrix membrane type of 16-key keypad with adhesive mounting (the back side of the matrix membrane is like a sticker). The Keypad has 8-pin connectors for interfacing purposes. The membrane size is 7cm by 7.5cm. The keypad circuitry is flexible. The flexible wire length is approximately 3.3 inches. \u003c\/p\u003e\n\u003cp\u003eThe 16-Key  4x4 Matrix Array 16-Key Membrane Switch Keyboard is a high-quality, durable, and easy-to-use keypad designed for use with Arduino, AVR, and PIC microcontrollers. This keypad features a 4x4 matrix array layout and has 16 keys in total, making it ideal for a wide range of applications, including robotics, automation, and other electronics projects.\u003c\/p\u003e\n\u003cp\u003eThe keypad is made from high-quality materials, including a flexible membrane and a sturdy plastic casing that ensures long-lasting durability and reliability. The keys are arranged in a compact, space-saving layout that allows for easy and comfortable use, even in tight spaces.\u003c\/p\u003e\n\u003cp\u003eThe keypad is easy to install and can be connected to your microcontroller using standard jumper wires. It also features a simple, intuitive interface that makes it easy to program and control.\u003c\/p\u003e\n\u003cp\u003eWith its high-quality construction and versatile design, the 16-Key  4x4 Matrix Array 16 Key Membrane Switch Keypad Keyboard is an excellent choice for anyone looking for a reliable and easy-to-use keypad for their Arduino, AVR, or PIC microcontroller projects. So, whether you're a hobbyist, engineer, or student, this keypad is the perfect choice for all your project needs.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"productView-table-row\"\u003e\n\u003cdiv class=\"productView-table-header\"\u003e\n\u003cul\u003e\n\u003cli\u003eDielectric Strength: 250VRms (50 ~ 60Hz Hz, 1 min)\u003c\/li\u003e\n\u003cli\u003eCircuit Rating: 35V (DC), 100mA, 1W\u003c\/li\u003e\n\u003cli\u003eLife span: \u0026gt;one million times\u003c\/li\u003e\n\u003cli\u003eKey Operating Force: 150-200N\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -40 to +80 °C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1  x   4 x 4 Matrix Array 16 Key Membrane Switch Keypad Keyboard for Arduino\/AVR\/PI​C\/raspberry pi\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003c\/div\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218222379111,"sku":"B0924B","price":15.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/item_XXL_8384000_8058268.jpg?v=1530919923"},{"product_id":"5v-one-1-channel-relay-module-board","title":"5A3   5V One 1 Channel Relay Module Board","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eA relay is an electromechanical device that uses an electric current to open or close the contacts of a switch. The single-channel relay module is much more than just a plain relay, it comprises of components that make switching and connection easier and act as indicators to show if the module is powered and if the relay is active or not.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"1 channel relay datasheet\" href=\"https:\/\/components101.com\/sites\/default\/files\/component_datasheet\/Relay-Module-Datasheet.pdf\"\u003e\u003cstrong\u003eDatasheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan lang=\"EN-US\"\u003eSupply voltage – 3.75V to 6V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-US\"\u003eQuiescent current: 2mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-US\"\u003eCurrent when the relay is active: ~70mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-US\"\u003eRelay maximum contact voltage – 250VAC or 30VDC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"EN-US\"\u003eRelay maximum current – 10A\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan lang=\"EN-US\"\u003ePinout\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable style=\"font-weight: 400;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cb\u003e\u003cstrong\u003ePin Number\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cb\u003e\u003cstrong\u003ePin Name\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cb\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e1\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eRelay Trigger\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eInput to activate the relay\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eGround\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e0V reference\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e3\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eVCC\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eSupply input for powering the relay coil\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e4\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eNormally Open\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eNormally open terminal of the relay\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e5\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eCommon\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eCommon terminal of the relay\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e6\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eNormally Closed\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eNormally closed contact of the relay\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"font-weight: 500;\"\u003e\u003cb\u003e\u003cstrong\u003eUnderstanding 5V Single-Channel Relay Module\u003c\/strong\u003e\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg height=\"396\" width=\"594\" alt=\"Single Channel Relay Module Overview\" src=\"https:\/\/components101.com\/sites\/default\/files\/inline-images\/Single-Channel-Relay-Module.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe single-channel relay module is much more than just a plain\u003cspan\u003e \u003c\/span\u003erelay, it contains components that make switching and connection easier and act as indicators to show if the module is powered and if the relay is active.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eFirst is the screw terminal block. This is the part of the module that is in contact with mains so a reliable connection is needed. Adding screw terminals makes it easier to connect thick mains cables, which might be difficult to solder directly. The three connections on the terminal block are connected to the normally open, normally closed, and common terminals of the relay.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe second is the relay itself, which, in this case, is a blue plastic case. Lots of information can be gleaned from the markings on the relay itself. The part number of the relay on the bottom says “05VDC”, which means that the relay coil is activated at 5V minimum – any voltage lower than this will not be able to reliably close the contacts of the relay. There are also voltage and current markings, which represent the maximum voltage and current, the relay can switch. For example, the top left marking says “10A 250VAC”, which means the relay can switch a maximum load of 10A when connected to a 250V mains circuit. The bottom left rating says “10A 30VDC”, meaning the relay can switch a maximum current of 10A DC before the contacts get damaged.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe 'relay status LED' turns on whenever the relay is active and provides an indication of current flowing through the relay coil.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe input jumper is used to supply power to the relay coil and LEDs. The jumper also has the input pin, which when pulled high activates the relay.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe switching transistor takes an input that cannot supply enough current to directly drive the relay coil and amplifies it using the supply voltage to drive the relay coil. This way, the input can be driven from a microcontroller or sensor output. The freewheeling diode prevents voltage spikes when the relay is switched off.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe power LED is connected to V\u003csub\u003eCC\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003eand turns on whenever the module is powered.\u003c\/p\u003e\n\u003ch3 style=\"font-weight: 500;\"\u003e\u003cb\u003e\u003cstrong\u003eSingle-Channel Relay Module Basic Trouble Shooting\u003c\/strong\u003e\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp style=\"font-weight: 400;\"\u003eIf the relay does not switch on, i.e. no audible clicking sound is heard:\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli style=\"font-weight: 400;\"\u003eThe contacts might be stuck - Check by physically shaking the relay, if a light clicking sound is not heard, then tap the relay hard, in most cases, this should ‘unstick’ both the contacts.\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003eIf the contacts do click when the relay is shaken, then the transistor or the flyback diode might be damaged and must be replaced.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-weight: 500;\"\u003e\u003cb\u003e\u003cstrong\u003eSingle-Channel Relay Module Applications\u003c\/strong\u003e\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul style=\"font-weight: 400;\"\u003e\n\u003cli style=\"font-weight: 400;\"\u003eMains switching\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003eHigh current switching\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003eIsolated power delivery\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003eHome automation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218233127015,"sku":"B0935B","price":15.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/item_XXL_8600134_8517103.jpg?v=1530920030"},{"product_id":"keypad-4-x-3-matrix-array-12-key-membrane-switch-keyboard","title":"1B13   Keypad 4 x 3 Matrix Array 12 Key Membrane Switch Keyboard","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe 12-Key 4x3 Matrix Membrane Type Keypad is the perfect companion for your Arduino projects. With its compact design and responsive keys, this membrane switch keypad provides a reliable and user-friendly input solution.\u003cbr\u003e\u003cbr\u003eFeaturing a 4 x 3 matrix layout, this keypad offers 12 individual tactile keys that are arranged in a 4 x 3 grid. Each key is labeled with a clear and easy-to-read alphanumeric character, allowing for quick and accurate input. Whether you are entering numbers, letters, or other symbols, this keypad provides a simple and intuitive interface.\u003cbr\u003e\u003cbr\u003eThe membrane type keypad uses a thin and flexible membrane layer with carbon contacts that respond to touch. This design ensures that each key press is registered promptly, giving you a smooth and efficient input experience. Plus, the membrane layer protects the internal components from dust and debris, making this keypad durable and long-lasting.\u003cbr\u003e\u003cbr\u003eDesigned specifically for Arduino, this keypad is easy to integrate into your projects. With simple connections, you can easily interface with your Arduino board and start using the keypad right away. The keypad is compatible with a variety of Arduino models, making it a versatile choice for any Arduino project.\u003cbr\u003e\u003cbr\u003eWhether you are working on a robotics project, a home automation system, or simply need a keypad for data entry, this 12-key 4x3 matrix membrane keypad is a reliable and efficient solution. Its small size, responsive keys, and easy integration make it a must-have for any Arduino enthusiast or electronics hobbyist.\u003cbr\u003e\u003cbr\u003eSo, if you are looking for a compact and reliable keypad for your Arduino projects, look no further than the 12 Key 4x3 Matrix Membrane Type Keypad. Get yours today and start exploring endless possibilities with your Arduino.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"productView-table-row\"\u003e\n\u003cdiv class=\"productView-table-header\"\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Generic\u003c\/li\u003e\n\u003cli\u003eSize: 68.9 x 76 x 0.8mm\u003c\/li\u003e\n\u003cli\u003eCable length: 85mm (including connector)\u003c\/li\u003e\n\u003cli\u003eConnector: dupont 7 pins, 0.1 inch (2.54mm) Pitch\u003c\/li\u003e\n\u003cli\u003eMax. circuit rating: 35VDC, 100mA\u003c\/li\u003e\n\u003cli\u003eMounting: Self-Adherence\u003c\/li\u003e\n\u003cli\u003eLife expectancy: 1 million closures\u003c\/li\u003e\n\u003cli\u003eWeight: 7g\u003c\/li\u003e\n\u003cli\u003eDielectric withstand: 250 volts (60Hz, 1 minute)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Keypad 4 x 3 Matrix Array, 12 Key Membrane Switch Keyboard\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218238959719,"sku":"B0941B","price":15.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/s-l500_20_281_29.jpg?v=1530920088"},{"product_id":"4-four-channel-relay-shield-5v-module","title":"2E11  4 four channel Relay Shield 5V Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eRelay Shield (i.e. 5V Quad Relay Module) is a small current signal control power equipment commonly used electronic module, enabling high-power single-chip control devices are widely used in SCM system to make smart home project; and can be directly plugged into the Arduino compatible the use of various types of motherboards, eliminating the patch cable troubles.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures \u003c\/h3\u003e\n\u003cp\u003e1. Standard Arduino Shield interfaces and shape\u003c\/p\u003e\n\u003cp\u003e2. Can continue to stack other Arduino expansion boards\u003c\/p\u003e\n\u003cp\u003e3. 3 M3 screw positioning holes for easy installation\u003c\/p\u003e\n\u003cp\u003e4. High Drive (5V or 3.3V) normally open contact closure\u003c\/p\u003e\n\u003cp\u003e5. Onboard relay indicator (red)\u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eSpecial Note: When using the Arduino UNO board connected to it, because UNO USB interface is extremely high, should avoid green terminals are shorted its shell.\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eRelay Shield Interface:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e Relay: sky- 5V DC relay, model HJR-4102-L-5V, which Relay1 behalf of the 1st relay, the other and so on.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e Power Interface: 5V DC power interface\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e Indicator: four lights are red when the relay is driven high , the corresponding indicator will light up .\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e Relay Terminals: Terminal high-power , high-current high voltage can be connected to the device . The 1st foot ( i.e. NOx) is a normally open pin , NCx pin is normally closed , COMx is common, i.e., when the relay is not driven , NOx and COMx open between two pins , NCx and COMx connection ; When the relay (x) control signal pin is high drive relays , NOx and COMx connection open between NCx and COMx\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1PCS x 4 channel Relay Shield 5V Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218255933543,"sku":"B0954B","price":50.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/item_XXL_9224275_9887717.jpg?v=1530920214"},{"product_id":"4-channel-5v-relay-module-board-1","title":"1C2 4 Channel 5V Relay Module Board","description":"\u003ch3\u003e\u003cspan style=\"font-weight: bold;\"\u003eDescription\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe four-channel relay module contains four 5V relays and the associated switching and isolating components, which makes interfacing with a microcontroller or sensor easy with minimum components and connections. The contacts on each relay are specified for 250VAC and 30VDC and 10A in each case, as marked on the body of the relays.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"4 channel relay datasheet\" href=\"https:\/\/components101.com\/sites\/default\/files\/component_datasheet\/Four-Channel-Relay-Module-Datasheet.pdf\" target=\"_blank\"\u003e\u003cstrong\u003eDatasheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eThis relay module is 5V active low.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eIt is an 4-channel relay interface board, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, raspberry pi, PIC, ARM, PLC, etc.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eIt is also able to control various appliances and other equipments with large current.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eRelay output maximum contact is AC250V 10A and DC30V 10A.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eStandard interface can be directly connected with microcontrollers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eRed working status indicator lights are conducive to the safe use.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eWidely used for all MCU control, industrial sector, PLC control, smart home control.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cspan style=\"font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003cspan style=\"font-weight: bold;\"\u003e \u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eWorking voltage: 5V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eChannel: 4 channel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eColor: Blue\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003esize: approx. 7.1 x 5.3 x 1.8cm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003eNet weight: 56.1g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch3\u003e\u003cspan style=\"font-weight: bold;\"\u003ePackage includes:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003e1 x 4 Channel Relay Module\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePinout\u003cbr\u003e\u003cbr style=\"color: inherit; font-family: inherit; line-height: 1.1;\"\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cimg height=\"466\" width=\"700\" src=\"https:\/\/components101.com\/sites\/default\/files\/component_pin\/Four-Channel-Relay-Module-Pinout.jpg\"\u003e\u003c\/p\u003e\n\u003ctable style=\"font-weight: 400;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cb\u003e\u003cstrong\u003ePin Number\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cb\u003e\u003cstrong\u003ePin Name\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cb\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e1\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eGND\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eGround reference for the module\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eIN1\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eInput to activate relay 1\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e3\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eIN2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eInput to activate relay 2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e4\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eIN3\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eInput to activate relay 3\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e5\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eIN4\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eInput to activate relay 4\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e6\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eV\u003csub\u003eCC\u003c\/sub\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003ePower supply for the relay module\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e7\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eV\u003csub\u003eCC\u003c\/sub\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003ePower supply selection jumper\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003e8\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eJD-V\u003csub\u003eCC\u003c\/sub\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-weight: 400;\"\u003eAlternate power pin for the relay module\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eWiring\u003c\/h3\u003e\n\u003cp\u003eMake connections according to the circuit diagram given below.\u003cimg sizes=\"(max-width: 970px) 100vw, 970px\" srcset=\"https:\/\/www.circuits-diy.com\/wp-content\/uploads\/2023\/05\/4-Channel-Relay-Module-Circuit-970x720.png 970w, https:\/\/www.circuits-diy.com\/wp-content\/uploads\/2023\/05\/4-Channel-Relay-Module-Circuit-485x360.png 485w, https:\/\/www.circuits-diy.com\/wp-content\/uploads\/2023\/05\/4-Channel-Relay-Module-Circuit-768x570.png 768w, https:\/\/www.circuits-diy.com\/wp-content\/uploads\/2023\/05\/4-Channel-Relay-Module-Circuit.png 1528w\" class=\"wp-image-87114\" alt=\"\" src=\"https:\/\/www.circuits-diy.com\/wp-content\/uploads\/2023\/05\/4-Channel-Relay-Module-Circuit-970x720.png\" height=\"720\" width=\"970\" decoding=\"async\" style=\"font-size: 0.875rem;\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"wp-block-heading\"\u003e\u003cspan id=\"Wiring_Connections\"\u003eWiring \/ Connection\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"has-text-align-center\" data-align=\"center\"\u003eArduino\u003c\/th\u003e\n\u003cth class=\"has-text-align-center\" data-align=\"center\"\u003eRelay Module\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eGND\u003c\/td\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eDC-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003e5V\u003c\/td\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eDC+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eD2\u003c\/td\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eIN1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eD3\u003c\/td\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eIN2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eD4\u003c\/td\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eIN3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eD5\u003c\/td\u003e\n\u003ctd class=\"has-text-align-center\" data-align=\"center\"\u003eIN4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 class=\"wp-block-heading\"\u003e\u003cspan id=\"Code\"\u003eCode\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNow copy the following code and upload it to Arduino IDE Software.\u003c\/p\u003e\n\u003cpre\u003e\u003ccode class=\"language-c\"\u003e\n#define PIN_RELAY_1  2 \/\/ the Arduino pin, which connects to the IN1 pin of relay module\n#define PIN_RELAY_2  3 \/\/ the Arduino pin, which connects to the IN2 pin of relay module\n#define PIN_RELAY_3  4 \/\/ the Arduino pin, which connects to the IN3 pin of relay module\n#define PIN_RELAY_4  5 \/\/ the Arduino pin, which connects to the IN4 pin of relay module\n\n\/\/ the setup function runs once when you press reset or power the board\nvoid setup() {\n  Serial.begin(9600);\n\n  \/\/ initialize digital pin as an output.\n  pinMode(PIN_RELAY_1, OUTPUT);\n  pinMode(PIN_RELAY_2, OUTPUT);\n  pinMode(PIN_RELAY_3, OUTPUT);\n  pinMode(PIN_RELAY_4, OUTPUT);\n}\n\n\/\/ the loop function runs over and over again forever\nvoid loop() {\n  Serial.println(\"Turn on all\");\n  digitalWrite(PIN_RELAY_1, HIGH);\n  digitalWrite(PIN_RELAY_2, HIGH);\n  digitalWrite(PIN_RELAY_3, HIGH);\n  digitalWrite(PIN_RELAY_4, HIGH);\n  delay(1000);\n\n  Serial.println(\"Turn off all\");\n  digitalWrite(PIN_RELAY_1, LOW);\n  digitalWrite(PIN_RELAY_2, LOW);\n  digitalWrite(PIN_RELAY_3, LOW);\n  digitalWrite(PIN_RELAY_4, LOW);\n  delay(1000);\n}\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003ch3 class=\"wp-block-heading\"\u003e\u003cspan id=\"Working_Explanation\"\u003eWorking Explanation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe first step is to connect the SSR module to the Arduino according to the pinout diagram provided by the manufacturer. The control pins of the SSR module (IN1, IN2, IN3, IN4) are connected to digital pins on the Arduino and the module’s power and ground pins are connected to the appropriate power and ground pins on the Arduino.\u003c\/p\u003e\n\u003cp\u003eIn the code, the pin numbers for the control pins of the SSR module and the appliances are defined and the pin modes are set in the setup function. In the loop function, the code uses the digital write function to control the appliances using the control pins of the SSR module. For example, to turn on the AC bulb, the code would write a high signal to the IN1 pin of the SSR module. To turn off the AC bulb, the code would write a low signal to the IN1 pin of the SSR module.\u003c\/p\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218267926631,"sku":"B0965B","price":24.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/s-l1600_20_284_29_dcc203f1-84e2-435e-bb7b-8caf4e8f0581.jpg?v=1530920331"},{"product_id":"5v-eight-8-channel-relay-module-with-optocoupler","title":"5A8 5V Eight 8 Channel Relay Module With Optocoupler","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cdiv\u003eV 8-Channel Relay Module: This is an 8-channel relay board that operates on 5V. It can be used directly to control 240V power appliances from most microcontrollers and other control system circuits. Perfect for switching 240V appliances like lights, fans, etc.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"product-short-desc\"\u003e\n\u003cdiv\u003eThe board has a high-quality relay, which can handle a maximum of 10A at 250V or 15A at 125V AC. Each relay has three connections: common (C), normally open (NO), and normally closed (NC) brought out to three-pin screw terminals, which makes it easy to make and remove connections. The board has a power indication and a relay status LED to ease debugging. Power input and relay control signals are brought to the header pins on the board.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eA wide range of microcontrollers, such as Arduino, AVR, PIC, ARM, and so on, can control it. The use of such a high-voltage relay eliminates the risk of heating up the relay, as electromechanical relays limit current consumption in accordance with a voltage rating.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eNote: On the high-level and low-level-triggered mode, friends who do not understand, have a look\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eA high-level trigger refers to the signal voltage between input and trigger, which can be understood as a signal input with VCC cathode short-circuit triggered away;\u003c\/li\u003e\n\u003cli\u003eLow-level trigger refers to the signal voltage between the input terminal and Earth OV trigger, which can be understood as the signal input terminal and the GND negative electrode short circuit triggered away from the 1-channel relay module connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e100% Brand New\u003c\/li\u003e\n\u003cli\u003eSize: 13.8 x 5.6 x 1.7cm (LxWxH)\u003c\/li\u003e\n\u003cli\u003eWorking voltage: 5V\u003c\/li\u003e\n\u003cli\u003eChannel: 8 channel\u003c\/li\u003e\n\u003cli\u003eThis relay module is 5V active low.\u003c\/li\u003e\n\u003cli\u003eIt is an 8-channel relay interface board, which can be controlled directly by a wide range of microcontrollers, such as Arduino, AVR, PIC, ARM, PLC, etc.\u003c\/li\u003e\n\u003cli\u003eIt is also able to control various appliances and other equipment with a large current.\u003c\/li\u003e\n\u003cli\u003eRelay output maximum contact is AC250V 10A and DC30V 10A.\u003c\/li\u003e\n\u003cli\u003eStandard interfaces can be directly connected to microcontrollers.\u003c\/li\u003e\n\u003cli\u003eRed working status indicator lights are conducive to safe use.\u003c\/li\u003e\n\u003cli\u003eWidely used for all MCU control, industrial sector control, PLC control, and smart home control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 8 channel relay module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePin Description: 5V 8 Channel Relay Module\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eC=common: This is the common terminal. This terminal will be connected to either of the other 2 terminals (NO or NC) based on the state of the relay.\u003c\/li\u003e\n\u003cli\u003eNO=normally open: As the name indicates, this is a normally open terminal, i.e., if the relay is not energized (not ON), this pin will be open. We can say that the switch is OFF by default, and when the relay is energized, it will become ON.\u003c\/li\u003e\n\u003cli\u003eNC=normally close: As the name indicates, it is a normally closed terminal, i.e., if the relay is not energized (not ON), this pin will be closed. We can say that the switch is ON by default, and when the relay is energized, it will become OFF.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications: 5V 8 Channel Relay Module\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTo Control solenoids\u003c\/li\u003e\n\u003cli\u003eMotors\u003c\/li\u003e\n\u003cli\u003eBulbs and bulbs\u003c\/li\u003e\n\u003cli\u003eLamps\u003c\/li\u003e\n\u003cli\u003eSmart home control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eIntegration with Arduino\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"Eight Channel 5V Relay Module With Optocoupler\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/800px-Ks0059-2.jpg?v=1641381534\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eSample Code\u003c\/h3\u003e\u003cpre\u003e\u003ccode class=\"language-c\"\u003e\nint BASE = 2 ;  \/\/ I\/O pin connected by the first relay\nint NUM = 8;   \/\/total number of all relays\nvoid setup()\n{    \/\/https:\/\/kitsguru.com\/products\/8-channel-isolated-5v-10a-relay-module-opto-coupler-for-arduino-pic-avr-dsp-arm\n   for (int i = BASE; i \u0026lt; BASE + NUM; i ++) \n   {\n     pinMode(i, OUTPUT);   \/\/set digital I\/O pin as output\n   }\n}\n\nvoid loop()\n{\n   for (int i = BASE; i \u0026lt; BASE + NUM; i ++) \n   {\n     digitalWrite(i, LOW);    \/\/set digital I\/O pin as ‘low’, i.e. turning off the relay gradually    \n delay(200);        \/\/delay\n   }\n   for (int i = BASE; i \u0026lt; BASE + NUM; i ++) \n   {\n     digitalWrite(i, HIGH);    \/\/ set digital I\/O pin as ‘low’， i.e. turning on the relay gradually    \n delay(200);        \/\/delay\n   }  \n\u003c\/code\u003e\u003c\/pre\u003e\n\n\u003cp\u003e \u003c\/p\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218315604071,"sku":"B1003B","price":60.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/s-l1600_ba4aa06f-4380-4aee-9517-3da88cadced9.jpg?v=1530920754"},{"product_id":"mini-12v-dc-power-relay-srd-12vdc-sl-c-pcb-type","title":"Mini 12V DC Power Relay SRD-12VDC-SL-C PCB Type","description":"\u003cdiv class=\"editor\" style=\"line-height: 2; padding: 0px 10px;\"\u003e\n\u003cdiv style=\"color: #333333; font-family: 'Microsoft YaHei', Tahoma, Verdana, Simsun; font-size: 14px;\"\u003e\n\u003cp style=\"margin-bottom: 0px; padding: 0px;\"\u003e\u003cstrong style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003eFeatures:\u003c\/strong\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e1, Switching capacity available 10A in spite of small size design for highdensity P.C board mounting technique.\u003c\/span\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e2, UL, CUL, TUV recognized.\u003c\/span\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e3, Selection of plastic material for high temperature and better chemical solution performance.\u003c\/span\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e4, Sealed types available.\u003c\/span\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cstrong style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003eApplications:\u003c\/strong\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003eDomestic appliance, office machine, audio, equipment, automobile, ect.\u003c\/span\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e(Remote control TV recelver, monltor display, audio equpment high rushing current use application.)\u003c\/span\u003e\u003cbr style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e                                         \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"color: #656d78; font-family: Arial; line-height: 18px; text-align: center;\"\u003e\n\u003cimg alt=\"\" data-original=\"http:\/\/img.banggood.com\/thumb\/water\/upload\/2014\/05\/SKU134902\/SKU134902h.jpg\" src=\"http:\/\/img.banggood.com\/thumb\/water\/upload\/2014\/05\/SKU134902\/SKU134902h.jpg\" style=\"width: 600px; height: 600px; display: inline;\"\u003e\u003cbr\u003e \u003c\/div\u003e\n\u003cdiv style=\"color: #656d78; font-family: Arial; line-height: 18px; text-align: center;\"\u003e\n\u003cimg alt=\"\" data-original=\"http:\/\/img.banggood.com\/thumb\/water\/upload\/2014\/05\/SKU134902\/SKU134902ii.jpg\" src=\"http:\/\/img.banggood.com\/thumb\/water\/upload\/2014\/05\/SKU134902\/SKU134902ii.jpg\" style=\"width: 600px; height: 600px; display: inline;\"\u003eDomestic appliance, office \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"color: #333333; font-family: 'Microsoft YaHei', Tahoma, Verdana, Simsun; font-size: 14px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003ePackage Included : \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #656d78; font-family: Arial; font-size: 14px;\"\u003e1 x Mini 12V DC Power Relay SRD-12VDC-SL-C PCB Type\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"color: #333333; font-family: 'Microsoft YaHei', Tahoma, Verdana, Simsun; font-size: 14px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"color: #333333; font-family: 'Microsoft YaHei', Tahoma, Verdana, Simsun; font-size: 14px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"color: #333333; font-family: 'Microsoft YaHei', Tahoma, Verdana, Simsun; font-size: 14px;\"\u003e\u003cspan style=\"color: #656d78; font-family: Arial; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218356596839,"sku":"B1053B","price":10.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/1468385917.png?v=1530921187"},{"product_id":"mini-5v-dc-power-relay-srd-5vdc-sl-c-5-pin-pcb-type","title":"Mini 5V DC Power Relay SRD-5VDC-SL-C 5 Pin PCB Type","description":"\u003cp\u003e\u003cstrong style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eFeature:\u003c\/strong\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eSelection of plastic material for high temperature and better chemical solution performance\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eSealed types available\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eSimple relay magnetic circuit to meet low cost of mass production\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cstrong style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eSpecification:\u003c\/strong\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eModel: SRD-5VDC-SL-C\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eCoil voltage: DC 5V\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eCoil resistance: 70Ω ~ 80Ω\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eContact resistance: 100Ω Max\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eOperation time: 10msec Max\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eRelease time: 5msec Max\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eAmbient temperature: -25°C to 70°C\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eOperating humidity: 45 to 85%RH\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eOperating current: 43mA ~ 46mA\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eRelease current: 15mA ~ 18mA\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003ePin: 5Pin\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eInsulation resistance: ≥100M (Ohm)\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eDielectric strength:\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eBetween coil \u0026amp; contacts: AC 1500V 50HZ ~ 60HZ\/min\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eBetween contacts: AC 1000V 50HZ ~ 60HZ\/min\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eRated load:: 10A 250V AC \/ 10A 125V AC \/ 10A 30V DC \/ 10A 28V DC\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eSize: 1.8 x 1.5 x 1.6cm (L x W x H)\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cstrong style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eApplication:\u003c\/strong\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cspan style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003eDomestic appliance, office machine, audio, equipment, automobile, etc.\u003c\/span\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cstrong style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003ePackage included:\u003c\/strong\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003cbr style=\"font-size: 14px; color: #656d78; font-family: Arial; line-height: 18px;\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x SRD-5VDC-SL-C 5V Power Relay\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218357186663,"sku":"B1054B","price":7.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/1468386005.png?v=1530921196"},{"product_id":"ssr-25dd-single-phase-solid-state-module-relay-25a-dc-5-60v","title":"4E1  SSR-25DD Single Phase Solid State Module Relay 25A DC 5-60V","description":"\u003ch3\u003e\u003cspan style=\"font-weight: bold; color: #000000;\"\u003eDescription\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SSR-25DD 5-60V Single Phase Solid State Module Relay is a power control component that is designed to provide switching capabilities to DC loads up to 25 amperes. It features normally-open and normally-closed contacts for power control and can handle input voltages of 5 to 60 volts. The module is a useful device for applications such as room lighting controls, irrigation systems, and remote power management.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-weight: bold; color: #000000;\"\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000; font-size: 0.875rem;\"\u003eInput Voltage: 5-32VDC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000; font-size: 0.875rem;\"\u003eOutput Voltage: 5-60VDC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000; font-size: 0.875rem;\"\u003eOutput Current: 25A\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000; font-size: 0.875rem;\"\u003eOn Voltage: ≤1V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000; font-size: 0.875rem;\"\u003eOne-off Time: ≤10ms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000; font-size: 0.875rem;\"\u003eOff Leakage Current: ≤2mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000; font-size: 0.875rem;\"\u003eWeight: 0.099kg\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"color: #000000;\"\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003ch3\u003e\u003cspan style=\"font-weight: bold; color: #000000;\"\u003ePackage Included:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e1 x SSR-25DD Single Phase Solid State Module Relay 25A DC 5-60V\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12218362200167,"sku":"B1064B","price":35.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/76309_2.jpg?v=1530921269"},{"product_id":"5v-16-channel-relay-module-with-light-coupling","title":"5V 16 Channel Relay Module with Light Coupling","description":"\u003ch3\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a 5V, 16-channel relay module with a light coupling LM2596S power supply. You will be able to control various appliances and other equipment with a large current. It can be controlled directly by a microcontroller (Arduino 8051, AVR, PIC, DSP, ARM, MSP430, TTL logic).\u003c\/p\u003e\n\u003cp\u003eThis is a 5V 16-Channel Relay Interface Board, and each one of the individual relays needs 15-20 mA of driver current. The board features indication LED for Relay output status and a standard interface that can be controlled directly by many of widely used microcontrollers like Arduino, etc.\u003c\/p\u003e\n\u003cp\u003eThe 5V electromechanical relay module has an AC contact capacity of 250V and also includes light coupling protection (optocoupler) for isolation of control circuitry. The plate load power module doesn’t need an external power supply. It supports all SCM drives.\u003c\/p\u003e\n\u003cp\u003eThe LM2596S buck chip in this relay module shows a slight fever, which is a normal phenomenon as relays with long working hours have normal fever characteristics. 4 relays load power to leave some margin. They should avoid high power (about 2000 watts) and a long working environment, which will have some impact on the life of the product.\u003c\/p\u003e\n\u003cp\u003eNoted: The relay module is SRD-5VDC-SL-C.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5V relay with an AC contact capacity of 10A at 250V and optocoupler protection.\u003c\/li\u003e\n\u003cli\u003eThe onboard power supply module does not need an external power supply. The I\/OO port driver is active.\u003c\/li\u003e\n\u003cli\u003eThe module can be used as a microcontroller development board module and also as appliance control and PLC extended output.\u003c\/li\u003e\n\u003cli\u003eIt is using the industry’s top-quality isolation optocouplers, strong anti-jamming ability and stable performance.\u003c\/li\u003e\n\u003cli\u003eThe 1-16 road can be any full-on\/off or any road.\u003c\/li\u003e\n\u003cli\u003eEach relay's common terminal, \"COM,” provides independent, user-friendly access to different signals, each relay is normally closed and normally open to the port.\u003c\/li\u003e\n\u003cli\u003eEach relay is equipped with a motion light.\u003c\/li\u003e\n\u003cli\u003eAll interfaces can be directly connected through the terminal leads, which is very convenient.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 5V 16 Channel Relay Module with Light Coupling LM2596S Power Supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePinout\u003c\/h3\u003e\n\u003cp\u003e\u003cimg height=\"332\" width=\"594\" src=\"http:\/\/www.botnroll.com\/img\/cms\/16-channel-relay-module-with-optocoupler-protection.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eArduino Example\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ein this example, we will blink a 220 volt lamp for 1 second and shoot it down for 1 second. You need to connect the 16 load the same \u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"596\" src=\"https:\/\/i.postimg.cc\/prdQc2T3\/16-relay-buck-circuit.jpg\" width=\"948\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eCode\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cpre\u003e\u003ccode class=\"language-c\"\u003econst int controlPin[16] = {2,3,4,5,6,7,8,9,10,11,12,A0,A1,A2,A3,A4}; \/\/ define pins\n\nconst int triggerType = LOW;\/\/ your relay type\nint loopDelay = 1000;\/\/ delay in loop\nint tmpStat =1;\n\n\nvoid setup() {\n  for(int i=0; i\u0026lt;16; i++)\n  {\n    pinMode(controlPin[i], OUTPUT);\/\/ set pin as output\n    if(triggerType ==LOW){\n      digitalWrite(controlPin[i], HIGH); \/\/ set initial state OFF for low trigger relay\n    }else{\n       digitalWrite(controlPin[i], LOW); \/\/ set initial state OFF for high trigger relay     \n    }\n  }\n  \n  Serial.begin(9600);\/\/ initialize serial monitor with 9600 baud\n}\n\nvoid loop() {\n\n  for(int i=0; i\u0026lt;16; i++)\n  {\n\n   channelControl(i,tmpStat,200);\/\/ turn each relay ON for 200ms\n\n    \n  }\n  if(tmpStat)\n  {\n    tmpStat=0;\n  }else{\n    tmpStat=1;\n  }\n Serial.println(\"===============\");\n \/\/channelControl(6,1, 2000); \/\/ turn relay 7 ON for 2 seconds\n \/\/channelControl(6,0, 5000); \/\/ turn relay 7 OFF for 5 seconds\n \/\/channelControl(9,1, 3000); \/\/ turn relay 10 OFF for ever\n\n delay(loopDelay);\/\/ wait for loopDelay ms\n          \n}\n\n\/*\n * funciton: channelControl\n * turns ON or OFF specific relay channel\n * @param relayChannel is integer value channel from 0 to 15\n * @param action is 1 for ON or 0 for OFF\n * @param t is time in melisecond\n *\/\nvoid channelControl(int relayChannel, int action, int t)\n{\n  int state =LOW;\n  String statTXT =\" ON\";\n  if(triggerType == LOW)\n  {    \n    if (action ==0)\/\/ if OFF requested\n    {\n      state = HIGH;\n      statTXT = \" OFF\";\n    }\n    digitalWrite(controlPin[relayChannel], state);\n    if(t \u0026gt;0 )\n    {\n      delay(t);\n    }\n       Serial.print (\"Channel: \");\n       Serial.print(relayChannel); \n       Serial.print(statTXT);\n       Serial.print(\" - \"); \n       Serial.println(t);        \n  }else{\n    if (action ==1)\/\/ if ON requested\n    {\n      state = HIGH;     \n    }else{\n      statTXT = \" OFF\";    \n    }\n    digitalWrite(controlPin[relayChannel], state);\n    if(t \u0026gt;0 )\n    {\n      delay(t);\n    }\n       Serial.print (\"Channel: \");\n       Serial.print(relayChannel); \n       Serial.print(statTXT);\n       Serial.print(\" - \"); \n       Serial.println(t);    \n  }\n\n}\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003c\/div\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":12675341418599,"sku":"B1143B","price":70.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/HR0056_5V_16_Channel_Relay_Module_with_Light_Coupling_LM2576_Power_Supply-228x228.png?v=1536673985"},{"product_id":"1e11-0011a-trigger-cycle-timer-delay-switch-5-30v-relay-switch-module-24h-timing-control","title":"1E11 Trigger Cycle Timer Delay Switch 5-30v Relay Switch Module 24H Timing control","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWide voltage power supply 5.0V ~ 60V;\u003c\/li\u003e\n\u003cli\u003eA mode can be set for multiple time periods, can reach 5 time periods;\u003c\/li\u003e\n\u003cli\u003eWith a buzzer alarm function.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMode Introduction:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eOPE: relay closing time point, CLE: relay off time point\u003c\/li\u003e\n\u003cli\u003eTime period: PE-1 ~ PE-5 5 time periods (OPE to CLE is a time period)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFunction Shielding\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eP-1: The relay closes or outputs pulses every day to the OPE time point, and the relay turns off or outputs pulses to the CLE time point.\u003c\/li\u003e\n\u003cli\u003eP-2: set the day, to the OPE time point when the relay closed or output pulse, to the CLE time point when the relay disconnect \/ or output pulse\u003c\/li\u003e\n\u003cli\u003eP-3: set the date of the month, to the OPE time point when the relay closed or output pulse, to the CLE time point when the relay is off or output pulse\u003c\/li\u003e\n\u003cli\u003eP-4: Set the date 1 to date 2, start every day at the OPE time point, end to the CLE time point, relay action or output pulse\u003c\/li\u003e\n\u003cli\u003eP-5: As with P-4, only the month can not be set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHow to set the time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn the time to run the interface, press the DOWN button for a while:\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eStep 1: Select the time period: PE-1 ~ PE-5 Press UP and DOWN to select;\u003c\/li\u003e\n\u003cli\u003eStep 2: Press the SET key to select the mode: P-1 ~ P-5 (Set this time period to the corresponding mode) by pressing the UP and DOWN keys. (\"----\" means to block this time period)\u003c\/li\u003e\n\u003cli\u003eNote: Each time period can be repeated from the \"----\", P-1 ~ P-5 one of the optional; For example,you can let five time periods at the same time work in the P-1 mode, or let Time period 1 work in P-1 mode, time period 2 work in P-2 mode and so on.\u003c\/li\u003e\n\u003cli\u003eStep 3: After the mode selection is finished, press the SET key to enter the time period setting interface, set the interface in the time period, press the SET key to switch the parameter, \"OPE\" start time point, \"CLE\" end point, \"dAE\" date information;\u003c\/li\u003e\n\u003cli\u003eStep 4: After setting the parameters to exit the settings, press the SET button for 2 seconds to release, automatically check whether the parameter settings are legal, legal to save the parameters, return to the time to run the interface; if the parameter is wrong, \"ERR\" reminder (for example, stop time or Date \u0026lt;= start time or date), return to the parameter setting interface;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach \"time period\" can be set individually\u003c\/p\u003e\n\u003cp\u003eIn the specific parameter setting interface (after the second step), press the STOP button to switch the output mode:\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eOUT1: Start time point turns on the relay, the end time is off the relay\u003c\/li\u003e\n\u003cli\u003eOUT2: Outputs 1S pulse to start or end time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn the specific parameter setting interface (after the second step), press the STOP button for a while to switch the ringing mode:\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eBLL0: Ring disable\u003c\/li\u003e\n\u003cli\u003eBLL1: Ring enable\u003c\/li\u003e\n\u003cli\u003eNote: When the bell rings, press any button to stop the ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSTOP Key Function Expansion:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRelay Enable Mode:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eON: enable relay on;\u003c\/li\u003e\n\u003cli\u003eOFF: Do not turn on the relay, it is always off;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePress the STOP button on the time display interface to switch between ON and OFF, the current status will flash, and then return to the main interface. (This function is the emergency stop function, press once to close the closed relay)\u003c\/p\u003e\n\u003cp\u003eAfter the relay is disabled, the product can be used as an alarm clock.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSleep mode:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eC-P sleep mode: within five minutes, without any operation, the digital tube automatically shut down the display, the program normal operation;\u003c\/li\u003e\n\u003cli\u003eO-d normal mode: digital tube is always open display;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePress the STOP button for a while after 2 seconds to release, to achieve C-P and O-d state of the switch, the current state will flash, and then return to the main interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 * Time Controller Relay Switch Module\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":32995396616295,"sku":"10006217","price":30.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/HS0964.jpg?v=1605344498"},{"product_id":"8-pin-4-4-matrix-16-keys-button-keypad-keyboard-breadboard-module-mcu-for-diy-kit","title":"1B14  8 pin 4*4 Matrix 16 Keys Button Keypad Keyboard Breadboard Module Mcu for Diy Kit","description":"\u003ch3 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eDescription\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Keypad 4x4 Matrix 16 Button Keyboard Module is a simple and cost-effective input device that allows users to input data through a 4x4 matrix keypad. This module can be easily interfaced with an Arduino board or any other microcontroller unit through an 8-pin header, which is located on the upper part of the board. This module features 16 tactile push buttons arranged in a 4x4 matrix, allowing for a total of 16 different button combinations. The pin header pitch of the module is 2.54, which is a standard pitch used for prototyping and breadboard applications. The keypad module has a maximum insulation resistance of 100MΩ at 100V and a maximum I\/U rating of 100mA and 35V. The contact bouncing time is around 5ms, which is a standard value for most tactile switches. The module is rated for the durability of up to 1 million presses, making it suitable for a wide range of applications. With its compact size of 43mm x 39mm, this module is easy to integrate into a wide range of projects, including security systems, access control, home automation, and industrial control systems. It is a popular input device due to its ease of use, low cost, and versatility.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003eMatrix Keypad: The module has a universal 4x4 matrix keypad with 16 buttons.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasy to Use: The module features a header on the upper part of the board that allows you to quickly and easily hook up the Keypad to an Arduino Board or any other MCU.\u003c\/li\u003e\n\u003cli\u003ePin Header Pitch: The module has a standard pin header pitch of 2.54mm.\u003c\/li\u003e\n\u003cli\u003eConnector: The module comes with an 8-pin connector for easy wiring.\u003c\/li\u003e\n\u003cli\u003eInsulation: The insulation resistance of the module is 100MΩ 100V.\u003c\/li\u003e\n\u003cli\u003eMaximum I\/U: The module can handle a maximum current of 100mA and a maximum voltage of 35V.\u003c\/li\u003e\n\u003cli\u003eContact Bouncing: The contact bouncing time of the module is 5ms.\u003c\/li\u003e\n\u003cli\u003eDurability: The module has long durability and can withstand up to 1 million presses.\u003c\/li\u003e\n\u003cli\u003eCompact Size: The module has a compact size of 43mm x 39mm, making it suitable for various applications.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Keypad 4x4 Matrix 16 Button Keyboard Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePinout of the Module:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003cimg src=\"https:\/\/i.postimg.cc\/q7MTmz3v\/Matrix-16-Keypad-Keyboard-Module-16-Button-MCU-TACT-Tactile-Sw-itch-pinout.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCircuit:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg width=\"641\" src=\"https:\/\/i.postimg.cc\/3rSW-TQBR\/Matrix-16-Keypad-Keyboard-Module-16-Button-MCU-TACT-Tactile-Sw-itch-circuit.jpg\" height=\"398\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeypad row 1 pin is connected to Arduino digital pin 10\u003c\/li\u003e\n\u003cli\u003eKeypad row 2 pin is connected to Arduino digital pin 11\u003c\/li\u003e\n\u003cli\u003eKeypad row 3 pin is connected to Arduino digital pin 12\u003c\/li\u003e\n\u003cli\u003eKeypad row 4 pin is connected to Arduino digital pin 13\u003c\/li\u003e\n\u003cli\u003eKeypad column 1 pin is connected to Arduino digital pin 6\u003c\/li\u003e\n\u003cli\u003eKeypad column 2 pin is connected to Arduino digital pin 7\u003c\/li\u003e\n\u003cli\u003eKeypad column 3 pin is connected to Arduino digital pin 8\u003c\/li\u003e\n\u003cli\u003eKeypad column 4 pin is connected to Arduino digital pin 9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eLibrary:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTo install the Keypad library for Arduino, follow these steps:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eOpen the Arduino IDE software on your computer.\u003c\/li\u003e\n\u003cli\u003eSelect \"Sketch\" from the menu, then \"Include Library\", and then \"Manage Libraries...\".\u003c\/li\u003e\n\u003cli\u003eIn the Library Manager, search for \"Keypad\" and select the Keypad library from the search results.\u003c\/li\u003e\n\u003cli\u003eClick on the \"Install\" button to install the Keypad library.\u003c\/li\u003e\n\u003cli\u003eWait for the installation process to complete.\u003c\/li\u003e\n\u003cli\u003eOnce installed, you can include the Keypad library in your Arduino code by selecting \"Sketch\" from the menu, then \"Include Library\", and then selecting \"Keypad\" from the list of installed libraries.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eNote: Make sure that you have an internet connection during the installation process. The installation process may take some time depending on the speed of your internet connection.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCode:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis example code initializes a 4x4 keypad with symbols on the buttons defined as '0' to '9' and 'A' to 'F'. The code then waits for a key press and when a key is pressed, it prints the corresponding value to the serial monitor at a baud rate of 9600.\u003c\/p\u003e\n\u003cpre\u003e\u003ccode class=\"language-c\"\u003e#include \"Keypad.h\"\n\nconst byte ROWS = 4; \/* four rows *\/\nconst byte COLS = 4; \/* four columns *\/\n\/* define the symbols on the buttons of the keypads *\/\nchar hexaKeys[ROWS][COLS] = {\n  {'0','1','2','3'},\n  {'4','5','6','7'},\n  {'8','9','A','B'},\n  {'C','D','E','F'}\n};\nbyte rowPins[ROWS] = {10, 11, 12, 13}; \/* connect to the row pinouts of the keypad *\/\nbyte colPins[COLS] = {6, 7, 8, 9}; \/* connect to the column pinouts of the keypad *\/\n\n\/* initialize an instance of class Keypad *\/\nKeypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); \n\nvoid setup(){\n  Serial.begin(9600);\n}\n\nvoid loop(){\n  \/\/ check for key press\n  char customKey = customKeypad.getKey();\n\n  \/\/ if a key is pressed, print the key value to the serial monitor\n  if (customKey != NO_KEY){\n    Serial.println(customKey);\n  }\n}\u003c\/code\u003e\u003c\/pre\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFirst, the Keypad library is included, and constants for the number of rows and columns on the keypad are defined. Then a 2D array of characters is defined, which represents the symbols on the buttons of the keypad.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNext, two arrays of bytes are defined to represent the row and column pins of the keypad, respectively. These arrays are used to initialize a Keypad object called\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003ecustomKeypad\u003c\/code\u003e, which represents the physical keypad connected to the Arduino.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIn the\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003esetup()\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003efunction, the code initializes serial communication with a baud rate of 9600, which allows us to print values to the serial monitor in the Arduino IDE.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIn the\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003eloop()\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003efunction, the code checks if any key on the keypad has been pressed by calling the\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003egetKey()\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003emethod of the\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003ecustomKeypad\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003eobject. If a key has been pressed, its value is stored in the\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003ecustomKey\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003evariable. If\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003ecustomKey\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003eis not equal to\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003eNO_KEY\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003e(a constant defined in the Keypad library to represent no key being pressed), the value of\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003ecustomKey\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003eis printed to the serial monitor using the\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003eprintln()\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003efunction.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cpre style=\"font-size: 0.875rem; display: inline !important;\"\u003e\u003ccode\u003e\u003c\/code\u003e\u003c\/pre\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":33084429664359,"sku":"10010017","price":15.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/S16.jpg?v=1608376127"},{"product_id":"ssr-25da-ssr-solid-state-solid-state-relay-25a-output-ac24-380v","title":"4E1  SSR-25DA SSR Solid-state Solid State Relay 25A Output AC24-380V","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSSR-25DA SSR Solid-state Solid State Relay 25A output AC24-380V\u003c\/strong\u003e\u2028\u2028\u003cstrong data-mce-fragment=\"1\"\u003eSpecification :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eBe used in Petrochemical industry equipment for strengthening security, power station, Substation relay protection system\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAC\/ DC high power controller relay\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eInput : DC3-32V\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOutput : AC24-380V\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCurrent : 25A\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSize : 6x4.5x2.8cm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWeight : 102g\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNormally open contact\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePackage included :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e1 x Solid state relay\u003c\/p\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":33107786367079,"sku":"10012217","price":35.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/products\/HR0214-91ASSR-25DASSRSolid-stateSolidStateRelay25AOutputAC24-380V.jpg?v=1609665646"},{"product_id":"6e3-battery-holder-2xaaa-with-cover-and-switch-ph2-0-connector-for-microbit","title":"6E3  Battery holder 2XAAA with cover and Switch +PH2.0 connector for Microbit","description":"\u003cp data-mce-fragment=\"1\"\u003e- Microbit special battery box\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e- Type: AAA 7 batteries\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e- Interface: PH2.0\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e- Line length: about 14cm\u003cbr data-mce-fragment=\"1\"\u003e- Total Measurement: 6.5*2.8cm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e- Compatible with micro:bit power connector\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003epackage Included:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e1 x Microbit special battery box\u003c\/p\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":40232894038119,"sku":"","price":15.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/files\/HS0821-300x300.png?v=1696858035"},{"product_id":"6a9-universal-wireless-remote-control-switch-dc-12v-2ch-10a-relay-receiver-module-with-2-channel-rf-remote-transmitter-for-various-wireless-controls","title":"6A9  Universal Wireless Remote Control Switch DC 12V 2CH 10A Relay Receiver Module with 1 Channel RF Remote Transmitter for Various Wireless Controls","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThis is a wireless remote control switch that can control DC 12V devices up to 1 channels and 10A current. It uses RF technology for communication and is suitable for various wireless control applications. The switch has a receiver module and a 2-channel RF remote transmitter that allows users to easily control the device. It is designed to be user-friendly and easy to set up, making it a great option for home automation and other applications.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorking Voltage: AC\/DC 12–48V\u003c\/li\u003e\n\u003cli\u003eStandby Current: 10 mA\u003c\/li\u003e\n\u003cli\u003eWorking Current: 30mA-90mA\u003c\/li\u003e\n\u003cli\u003eWorking Temperature: -20℃~80℃ \/ -4℉~176℉\u003c\/li\u003e\n\u003cli\u003eReceive sensitivity: -103 dBm\u003c\/li\u003e\n\u003cli\u003eFrequency: 433Mhz\u003c\/li\u003e\n\u003cli\u003eLoad Range: \u0026lt;10A\u003c\/li\u003e\n\u003cli\u003eCode Type: Learning Code\u003c\/li\u003e\n\u003cli\u003eRemote Control: Approx. 6.2 x 3 x 1.3cm\/2.4 x 1.2 x 0.5 inch\u003c\/li\u003e\n\u003cli\u003eRemote Switch: Approx. 8.9 x 6 x 2.8cm\/3.5 x 2.4 x 1.1 inch\u003c\/li\u003e\n\u003cli\u003eOutput Mode: Switch signal contact output\u003c\/li\u003e\n\u003cli\u003eWorking Mode: Self-locking, jog, interlock, delay\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"celwidget aplus-module basic-module-13-text aplus-standard\" data-csa-c-id=\"85rcl4-swcuhy-pm2lar-1akko0\" data-cel-widget=\"aplus-basic-module-13-text\" cel_widget_id=\"aplus-basic-module-13-text\"\u003e\n\u003cdiv class=\"a-section a-spacing-none aplus-module aplus-module-13 aplus-module-wrapper apm-fixed-width\"\u003e\n\u003cdiv class=\"a-section a-spacing-none aplus-module-section aplus-text-section\"\u003e\n\u003ch3 class=\"description\"\u003e\u003cspan class=\"a-text-bold\"\u003eOperation Method\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"a-unordered-list a-vertical\"\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003ePress the learning button once, and the indicator flashes. Press any one button on the transmitter, and the indicator flashes 3 times quickly. It indicates the code learning of the first relay was successful.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003ePress the learning button twice, and the indicator flashes. Press any one button on the transmitter, and the indicator flashes 3 times quickly. It indicates the code learning of the second relay is successful.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eClear Code: Press the \"Learning\" button until the indicator is long and bright.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"description\"\u003e\u003cspan class=\"a-text-bold\"\u003eWorking Mode\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"a-unordered-list a-vertical\"\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eJOG: Press the \"Model\" button once; the indicator turns off after flashing one time, indicating the working mode is \"JOG.\".\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eInterlock: Press the \"Model\" button twice; the indicator turns off after flashing two times, indicating the working mode is \"Interlock.\".\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eSelf-locking: Press the \"Model\" button three times; the indicator turns off after flashing three times, indicating the working mode is \"self-locking.\".\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eDelay: Press the \"Model\" button four times; the indicator turns off after flashing four times, indicating the working mode is \"Delay.\". (This mode will delay time for 5 seconds.)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"celwidget aplus-module 3p-module-b aplus-standard\" data-csa-c-id=\"k1kco1-gtivj3-kk2dtr-ypg44o\" data-cel-widget=\"aplus-3p-module-b\" cel_widget_id=\"aplus-3p-module-b\"\u003e\n\u003cdiv class=\"aplus-module-wrapper aplus-3p-fixed-width\"\u003e\n\u003ch3 class=\"a-spacing-mini\"\u003eWiring Diagram\u003c\/h3\u003e\n\u003cimg height=\"621\" width=\"1003\" alt=\"2\" src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4517e355-e146-4b36-84a0-0510ba36ea14.__CR0,0,970,600_PT0_SX970_V1___.jpg\" class=\"a-spacing-base\" data-src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/4517e355-e146-4b36-84a0-0510ba36ea14.__CR0,0,970,600_PT0_SX970_V1___.jpg\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e","brand":"Blue PCB Electronics","offers":[{"title":"Default Title","offer_id":40348254535783,"sku":"","price":100.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/files\/22.07.2024_17.23.40_REC.png?v=1721718315"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2285\/0583\/collections\/item_XXL_8384000_8058268.jpg?v=1695729839","url":"https:\/\/www.blue-pcb.com\/collections\/relays-switches-and-buttons-2\/matrix.oembed","provider":"Blue PCB Electronics","version":"1.0","type":"link"}