MQ-4 LPG Methane/Hydrogen Gas Sensor Module

MQ-4 LPG Methane/Hydrogen Gas Sensor Module  -Dual-way Signal Output, Analog output and TTL level outputHigh sensitivity to LPG, gas, alcohol, hydrogen and more-Fast response and recovery-Good steadiness and long service life-Great for home or factory gas leakage detection-Use for Detecting: Combustible gas such as LPG, butane, methane, alcohol, propane, hydrogen, smoke, etcSpecification:Main chip:MQ-4 gas sensor moduleWorking Voltage: 5V For DCDetecting Range: 300 to 10000ppmTTL output valid signal is lowSize:32X22X27mm