This Smart Combustable Gas Sensor utilizes an extra low power-consuming Zigbee wireless module. It is used for detecting a leakage of combustable gases and preventing dangerous situations caused by such leakages. This device adopts a high stability semi-conductor gas sensor, with small sensitivity drift and several other features. It will produce an audible alarm when gas density in the air exceeds the set maximum. It is perfect for use while cooking, or detecting gas in any indoor area.