MQ-4 Sensor Detecting Module

Mq-x series are all kinds of strange gas detectors, gas, natural gas, lighter leakage can be detected, alcohol, formaldehyde, inhalable suspension can be detected.

Note that mq-135 can detect all the gases listed above, but cannot distinguish them. If you want to target one gas specifically, it is best to choose another sensor. The sensor also requires a heater to warm up the sensor. It is not recommended to use it with a smaller battery, as it will quickly run out of battery power.

Parameters:
Working voltage: 3.3V
Output type: digital signal, analog signal
Interface mode: ph2.0-4p
Module size: 34 x 25mm
Module weight: About 80g