... 5 gas sensor has high sensitity to Methane, Propane and Butane, and could be used to detect both Methane and Propane ... Combustible gas in wide range, 2. High sensitivity to Methane, Butane and Propane, 3. Long life and low cost, 4. Simple ... (Black Bakelite)Detection GasLPG, Methane, coal gasConcentration300-10000ppm( Methane, Propane, Butane, H2)CircuitLoop VoltageVc≤24V DCHeater VoltageVH5.0V±0.2V AC ...