Best sell Methane sensor

MQ-4 gas sensor has high sensitity to Methane, also to Propane and Butane. The sensor could be used to detect different combustible gas, especially Methane, it is with low cost and suitable for different application.Model No.MQ-4Sensor TypeSemiconductorStandard EncapsulationBakelite (Black Bakelite)Detection GasNatural gas/ MethaneConcentration300-10000ppm( Natural gas / Methane)CircuitLoopVoltageVc≤24V DCHeater VoltageVH5.0V±0.2V ACorDCLoad ResistanceRLAdjustableCharacterHea