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MQ-3 Gas Sensor MQ-3 Alcohol Detector Gas Sensor Module - RC031

MQ-3 Gas Sensor MQ-3 Alcohol Detector Gas Sensor Module - RC031


223 in stock

Regular price Rs. 88.00
Regular price Sale price Rs. 88.00
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This MQ-3 Gas Sensor is suitable for detecting alcohol concentration in your breath, just like your common breathalyzer. The MQ-3 Gas Sensor provides an analogue resistive output based on alcohol concentration. When the MQ-3 Gas Sensor is present in the environment in which the alcohol vapour, the sensor's conductivity increases with the concentration of alcohol gas in the air increases. Using a simple circuit can be converted to the change in conductivity of the gas concentration with the corresponding output signal.


    • Input voltage: DC5V
    • Power consumption (current) : 150 mA
    • DO output: TTL digital 1 and 0 (0.1 and 5 V)
    • AO output: 0.1-0.3 V (pollution-free)
    • The highest concentration of voltage: Approx 4 V
    • Detection range of alcohol: detection range of 10 ~ 1000 PPM


    • High-quality double panel design, with power indicator and TTL output signal
    • Have DO switch signal(TTL) output and AO analogue signal output
    • TTL output signal for low level effectively. (when the low output electric signal lights at ordinary times, can be directly connected to a single-chip microcomputer or relay module)
    • Analogue output voltage with concentration, the higher the concentration, the higher voltage
    • MQ-3 Gas Sensor has better sensitivity to liquefied petroleum gas, natural gas, city gas, smoke
    • MQ-3 Gas Sensor has long service life and reliable stability
    • Rapid response recovery features

    Pin Description:

    • VCC: Positive (5 v)
    • GND: Connect power negative
    • DO: TTL switch signal output
    • AO: Analog signal output

    Package Included:

    1 x MQ-3 Gas Sensor MQ-3 Alcohol Detector Gas Sensor Module