MQ-3 - Alcohol Sensor - Module
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Alcohol Sensor (MQ-3)


This module is made using Alcohol Gas Sensor MQ3. It is a low cost semiconductor sensor which can detect the presence of alcohol gases at concentrations from 0.05 mg/L to 10 mg/L. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. It’s conductivity increases as the concentration of alcohol gases increases. It has high sensitivity to alcohol and has a good resistance to disturbances due to smoke, vapor and gasoline. This module provides both digital and analog outputs. MQ3 alcohol sensor module can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi etc.


  • Low Cost
  • Fast Response
  • Stable and Long Life
  • Good Sensitivity to Alcohol Gas
  • Both Digital and Analog Outputs
  • On-board LED Indicator

Technical Data

        Concentration : 0.05 mg/L ~ 10 mg/L Alcohol
        Operating Voltage : 5V ±0.1
        Current Consumption : 150mA
        Operation Temperature : -10°C ~ 70°C

 Pin Out

        VCC – Input Power Supply
        GND – Supply Ground
        DO – Digital Output
        AO – Analog Output


  • Vehicle Alcohol Detector
  • Portable Alcohol Detector


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MQ-3 - Alcohol Sensor - Module

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  • Views: 10622
  • Product Code: MQ-3-Alcohol-Sensor-Mod
  • SKU: PL-46-145
  • Availability: 12
  • Rs. 150.00
  • 5 or more Rs. 140.00
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