Smart Electronics Methane liquefied gas combustible gas MQ-2 smoke gas sensor module

1. Adopting high-quality dual panel design, with power indication and TTL signal output indication 2. Equipped with DO switch signal (TTL) output and A0 analog signal output;

3. TTL outputs a valid signal at a low level. When the signal light is on when the output is low, it can be directly connected

to a microcontroller or relay module

4. The voltage output from the analog signal, the higher the concentration, the higher the voltage 

5. Has good sensitivity for methane and natural gas detection 

6. There are four screw holes for easy positioning 

7. Product dimensions: 32 (L) * 20 (W) * 22 (H) 

8. Long term service life and reliable stability 

9. Quick response and recovery features

Input voltage: DC5V

Power consumption (current): 150mA 

DO output: TTL digital quantities 0 and 1 (0.1 and 5V) 

AO output: 0.1-0.3V (relatively pollution-free) high concentration voltage of around 4V