Alcohol sensor MQ-3 - semiconductor - blue module

Index: MOD-03736 EAN: 5904422359447

Module with the alcohol sensor MQ-3 with the goldpin pins, pitch of 2.54 mm. It is powered with the voltage of 5 V. It has digital and analog output, making it compatible with most of the commissioning modules including Arduino.

Alcohol sensor MQ-3 - semiconductor - blue module
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Manufacturer: OEM


  • Power Supply: 5 V
  • LED indicating the operation of the sensor
  • Measuring range: 0.04 mg/L - 4 mg/L
  • Ratio: 0.1 mg/L = 0,21 ‰.
  • Analog and digital output
  • Pins: goldpin connectors, 2.54 mm pitch
  • Dimensions: 35 x 22 x 30 mm
  • It has mounting holes with diameter: 3.2 mm


The characteristics and other details are inthe documentation of the sensor.


Czujnik alkoholu MQ-3 - półprzewodnikowy - moduł niebieski

The digital output D0

With the help of placed on the reverse side of the board, potentiometer, set is the threshold, exceeding of which, causes the output D0 changing from a high to a low status. The pin D0 can be linked directly with a microcontroller or commissioning set, includingArduino, or for example,a module with a buzzer, which will signal a too low or too high levelof alcohol in the air.


Analog output A0

The sensor has an analog output A0, which must be connected to the pin of the converter A/D (analog input inArduino). This will allow you to measure the proportional voltage signal and more accurately determine the level of alcohol.


Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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