The MQ8 Gas Sensor module is useful for gas leakage detection. They are used in gas leakage detecting equipments in home and industry, are suitable for detecting of Hydrogen. Due to its high sensitivity and response time, measurements can be taken as soon as possible.
Try and avoid alcohol, LPG,cooking fumes as the sensor has slight sensitivity to these substances and this may affect results
The sensitivity of the sensor can be adjusted by using the potentiometer.
* High sensitivity to Hydrogen * Small sensitivity to alcohol, LPG,cooking fumes * Fast response . * Stable and long life * Simple drive circuit
here are the connections for my sensor