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2 Pack MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module
- MQ-2 Smoke LPG Butane Hydrogen 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-2 Sensor Module
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Overview
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The gas-sensing material used in the MQ-2 gas sensor is tin oxide (SnO2) with a low conductivity in clean air. When there is a combustible gas in the environment in which the sensor is present, the conductivity of the sensor increases as the concentration of combustible gas in the air increases. The change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit. The MQ-2 gas sensor is highly sensitive to liquefied gas, propane and hydrogen, and is ideal for the detection of natural gas and other combustible vapors. This sensor can detect a variety of flammable gases, is a variety of applications for low-cost sensors.
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