Description
Structure and configuration of MQ-4 gas sensor is composed of 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-4 has 6 pin, 4 of them are used to fetch signals, and other 2 are used for providing heating current.
MQ-4 Gas Sensor Features:
•   Good sensitivity to Combustible gas in wide range.
•   High sensitivity to CH4, Natural gas.
•   Small sensitivity to alcohol, smoke.
•   Fast response Stable and long life.
•   Simple drive circuit.
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