MQ3 Alcohol Gas Sensor Module



  1. Sensitive to alcohol, ethanol
  2. Fast response and recovery
  3. Adjustable sensitivity
  4. Signal output indicator
  5. Analog and level signal output.
  6. The carbon monoxide detection with better sensitivity.
  7. Has a long service life and reliable stability.
  8. Output voltage boosts along with the concentration of the measured gases increases
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This is a very easy to use low cost semiconductor Gas sensor Module with analog and digital output. This module uses MQ3 Alcohol gas sensor as a alcohol gas sensing element. It requires no external components just plug in Vcc & ground pins and you are ready to go.

For Digital output the threshold value can be easily set by an on-board potentiometer.  Using this module you can easily interface MQ3 Alcohol sensor to any Microcontroller, Arduino or even Raspberry Pi.

Since this Gas Sensor module is sensitive to alcohol it can be used in breathalyser. MQ3 Sensor also has small sensitivity to Benzine.

MQ3 Alcohol Gas Sensor Module
MQ3 Alcohol Gas Sensor Module