MQ2 Propane Ethanol Gas Sensor Detection Module

MQ2 Propane Ethanol Gas Sensor Detection Module
MQ2 Propane Ethanol Gas Sensor Detection Module
Price: $5.50
Datasheet: 

This is the MQ2 Gas Sensor Detection Module. It is Arduino compatible.

Features a wide detecting scope, fast response time, and high sensitivity with a stable, simple drive circuit.

See the Datasheet for details.