MQ2 Gas Sensor is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on. Based on its fast response time. measurements can be taken as soon as possible. Also the sensitivity can be adjusted by the potentiometer.

MQ2 gas Sensor can detect gas concentrations anywhere from 200 to 10000ppm. MQ2 sensor is very sensitive to Propane, Hydrogen, methane and LPG.

The MQ series of gas sensors use a small heater inside with an electro-chemical sensor. They are sensitive for a range of gasses and are used indoors at room temperature.

The sensitive material of MQ2 Gas sensor is SnO2, which has lower conductivity in clean air. When the target gas exist, the sensor’s conductivity is higher along with the gas concentration rising. MQ2 sensor could be used to detect different combustible gases especially Methane. It is very low cost and suitable for different application. This sensor can be used to make wireless Gas leak detector in home security system.

Features:

High sensitivity to Propane, smoke, Hydrogen, LPG, CO, alcohol, Smoke.
Fast response time <10s
High sensitivity
Stable and long life

Connections:
Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector.

Applications:

Gas leak alarm
Gas detector
Gas leak detection system
Fire/safety detection system
Industrial combustible gas detector

Gas Sensor Module

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MQ2 Smoke and Flammable Gas Sensor