Alcohol Ethanol Gas Sensor Module (MQ-3)

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The MQ-3 sensor is one of the most commonly used sensors in the MQ sensor series. It is a chemiresisotors because sensing is based on the change of resistance of the sensing materi al when it is exposed to alcohol. Main chip: LM393, ZYMQ-3 gas detector Working Voltage: DC 5V Current consumption: 150mA With signal output instructions Two-way signal output (TTL level output and analog output) TTL output effectively signal for low level (when the output low level signal lights, can directly connected microcomputer) Analog output 0 ~ 5v voltage, the higher the concentration, the higher the voltage Size: 32 x 20 x 22mm Resources: MQ-3 Datasheet Usage Guide Arduino Library (GitHub) Show more