Electronic brick - Gas sensor(MQ6)

This brick comes with a MQ6 gas sensor, you can adjust the sensitivity with the potentioneter.
MQ-6 GAS SENSOR   Features 

• High sensitivity to LPG, iso-butane,propane
• Small sensitivity to alcohol, smoke.             
• Fast response
• Stable and long life
• Simple drive circuit 

Typical detection ranges:   Propane, butane, liquified petroleum gas, 300ppm to 10,000ppm   Application   They are used in gas leakage detecting   equipments in family and industry, are suitable for detecting of LPG, natural gas , town gas, avoid the noise of alcohol and cooking fumes and cigarette smoke.   Documents   Please visit our wiki page for more info about this product. It will be appreciated if  you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.