MQ-2 Gas Leakage Sensor Module

The MQ2 gas sensor operates on 5V DC and consumes approximately 800mW. It can detect LPG, Smoke, Alcohol, Propane, Hydrogen, Methane and Carbon Monoxide concentrations ranging from 200 to 10000 ppm.
Specification
Power supply needs: 5V
Interface type: Analog
Pin Definition: 1-Output 2-GND 3-VCC
Wide detecting scope
Fast response and High sensitivity
Simple drive circuit
Stable and long life
Size: 40x20mm
Outline dimensions :19mm x 15.5mm x 15mm