... maintenance 5 year sensor life Product Overview: KQ500 series fixed gas detector(also gas transmitter): with 6 years experience in designing ... various gases such as flammable gas, O2,H2S,CO,HCN,NO2,SO2,NH3,HCL,CL2,H2 etc. The device adopts ... wire type)Sensorelectrochemical sensor; catalytic combustion type sensor for KQ500-EXRespond TimeT90<30sWeight ≤900gFixing ParametersFixing type: wall-mounted ...