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.

Structure and configuration of MQ-5 gas sensor is composed by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. The heater provides necessary work conditions for work of sensitive components. The enveloped MQ-5 have 6 pin ,4 of them are used to fetch signals, and other 2 are used for providing heating current.

Features:

High sensitivity to LPG, natural gas , town gas

Small sensitivity to alcohol, smoke.

Fast response , Stable and long life , Simple drive circuit

1. One piece MQ 5 Gas sensor board