1.Long life and low cost.
2.Simple drive circuit.
3. large signal output
Gas and smoke home security sensor
Sensitive material of MQ-2 gas sensor is SnO2, which with lower conductivity in clean air.
When the target combustible gas exist, The sensor’s conductivity is more higher along with the
gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to
correspond output signal of gas concentration.MQ-2 gas sensor has high sensitity to LPG, Propane
and Hydrogen, also could be used to Methane and other combustible steam, it is with low cost and
suitable for different application.
* Domestic gas leakage detector
* Industrial Combustible gas detector
* Portable gas detector
Bakelite (Black Bakelite)
Combustible gas and smoke
300-10000ppm( Combustible gas)
2KΩ-20KΩ(in 2000ppm C3H8 )
Rs(in air)/Rs(1000ppm isobutane)≥5
Standard test circuit
Over 48 hours