Suitable for family or factory of methane gas, natural gas and other monitoring devices, can test gas, methane 300 to10000ppm;
1, the use of high quality dual panel design, with power and TTL signal output indicator;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output signal is low level. (when the output is low, it can be directly connected to the microcontroller or relay module).
4, analog output voltage, the higher the concentration of higher voltage.
5, the detection of methane, natural gas has a good sensitivity.
6, four screw holes for positioning;
7, product appearance size: 32 (L) *20 (W) *22 (H)
8, has long service life and reliable stability
9, rapid response recovery characteristics
Input voltage: DC5V power (current): 150mA
DO output: TTL number 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relative no pollution), the highest concentration of about 4V
Special remind: sensor is energized, the need to preheat the 20s about, the measured data is stable, heat sensor belongs to the normal phenomenon.) because of the internal electric heating wire, if hot is not normal.
Package Included :
- 1 x MQ-4 Natural Gas Methane Gas Sensor Module