... gas concentration.MQ-6 gas sensor has high sensitity to Propane, Butane and LPG, also response to Natural gas. ... sensitivity to Combustible gas in wide range * High sensitivity to Propane, Butane and LPG * Long life and low cost * ... (Black Bakelite)Detection GasIsobutane, Butane, LPGConcentration300-10000ppm( Butane, Propane, LPG)CircuitLoop VoltageVc≤24V DCHeater VoltageVH5.0V±0.2V ACorDCLoad ...