HUABAN 2PCS MQ 4 MQ4 Gas Methane Sensor Module for Arduino

MQ-4 Methane and Nature Gas Sensor Input Voltage : DC5V & Power consumption ( current ): 150mA & DO output: TTL digital 0 and 1 ( 0.1 and 5V) & AO output:0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal . Size: 32(L)x20(W)x22(H)mm/1.26"x0.79"x0.76" Package Include: 2PCS MQ-4 Sensor Module, Manufacturer: HUABAN