Alcohol Gas Sensor MQ-3

An alcohol gas sensor

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Price and order


6,00 € incl. tax

4 items in stock

Quantity from 1 to 4 from 5 to 9 from 10 to 24 from 25 to 49 from 50 to +
Price 6,00 € 5,88 € 5,70 € 5,52 € 5,46 €

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer.

It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration.

The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.


Please review the datasheet for conversions to ppm then for BAC.



  • 5V DC or AC circuit
  • Requires heater voltage
  • Operation Temperature: -10 to 70 degrees C
  • Heater consumption: less than 750mW



  • 16.8mm diameter
  • 9.3 mm height without the pins


Three examples:


Like all our products, this kit is RoHS.

Logo RoHS

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