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- Components: Blue 20 x 4 2004 lcd display + I2C serial interface backpack; 2004 lcd screen can display 4-lines x 20-characters with built-in industry standard HD44780 equivalent LCD controller.Default Address: 0x27 for PCF8574T chip; 0x3F for PCF8574AT chip; please check which chip you have on i2c interface. (Before you upload the code to the control board, please download the LiquidCrystal_I2C library)
- Four Pins: VCC, GND,SDL and SCA used for connecting Dupont Line or IIC dedicated cable.
- Display Function: Can be used to display real time clock, temperature, humidity etc. (A potentiometer is also necessary to adjust the contrast. Working Voltage: Only 5V )
- Wide Application: Commonly used in copiers, fax machines, laser printers, industrial test equipment and networking equipment such as routers and storage devices.