Seeed Grove Range of Sensors and Modules - Seeed Studio 101020055, Seeed 101020055 Grove - Gas Sensor(MQ2) module is useful for gas leakage detecting (in home and industry).
It can detect LPG, i-butane, methane, alcohol, hydrogen and smoke.
Based on its fast response time, measurements can be taken as soon as possible and the sensitivity can be adjusted by the potentiometer.
Seeed 101020055 Grove - Gas Sensor(MQ2)