MQ-4 DC5V Alcohol Methane Hydrogen Smoke Gas Detector Sensor Module For Arduino

Module Features:

1. using high-quality dual-panel design, with power indicator and TTL signal output instructions;
2. with a DO switch signal (TTL) output and AO analog signal output;
3. TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module)
4. the analog output voltage, the higher the concentration the higher the voltage.
5. methane, natural gas has better detection sensitivity.
6. there are four screw holes for easy positioning;
7. Product Dimensions: 32 (L) * 20 (W) * 22 (H)
8. with a long service life and reliable stability
9. rapid response and recovery characteristics