MQ-2 Smoke Gas LPG Butane Hydrogen Gas Sensor Detector Module For Arduino

Features:
Standard assembling structure (Times-of-5mm Center distance between two 3mm mounting holes)
Easily recognitive interfaces of sensors ("A" for analog and "D" for digital)
Icons to simplely illustrate sensor function 
High quality connector
Immersion gold surface

The main chips: the LM393, the MQ-2 Butane Hydrogen Gas Sensor
The working voltage: DC 5 V

Specifications:
Power supply needs: 5V
Interface type: Analog
Wide detecting scope
Fast response and High sensitivity
Simple drive circuit
Stable and long life
Size:36.4x26.6mm

Application:

For the household or environment detection Smoke, Gas Butane ,Hydrogen Gas sensor detection devices. fit for the detection of Gas Butane ,Hydrogen and town gas.