MQ2 GAS Sensor is a very easy to use and very handy, suitable for sensing smoke, Hydrogen, LPG, CO, alcohol, Smoke, Propane concentration in the air. 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.