MQ2 Smoke Gas Sensor Module

MQ2 Smoke Gas Sensor Module

MQ2 Smoke Gas Sensor Module is a general purpose gas sensor able to detect LPG, butane, methane, alcohol, hydrogen, and smoke. This sensor has a high sensitivity and fast response time.

The module outputs a voltage from 0 to 5V relative to the gas concentration.

✅VCC: positive power supply (5V)
✅GND: power supply is negative
✅DO: TTL switching signal output
✅AO: analog signal output

Note: PCB dimension, and color may vary slightly.
Note: Power off circuit before connecting/disconnecting the sensor