This module uses MQ6 LPG gas sensor as a gas sensing element. It requires no external components just plug in Vcc & ground pins and you are ready to go.
 
For Digital output the threshold value can be easily set by an on-board potentiometer. Using this module you can easily interface MQ6 LPG gas Sensor to any Microcontroller, Arduino or even Raspberry Pi.
 
Specifications:-
Power Supply: 5 Volts
Interface Type: Analog & Digital
High Sensitivity to LPG, iso-butane, propane
Small sensitivity to alcohol, smoke
Good sensitivity to Combustible gas in wide range
High sensitivity to Propane, Butane, LPG and also response to Natural gas
Long life and low cost
Simple drive circuit
 
Applications of MQ6 LPG Gas Sensor Module:-
 
Gas leak detection system
Fire/Safety detection system
Domestic gas leakage detector
Industrial Combustible gas detector
Portable gas detector
Gas leak alarm
Gas detector