Alcohol sensor MQ-3 - semiconductor*

Alcohol sensor with analog output. It measures the content of alcohol, for example, in the exhaled air.

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Price 8,50 zł

5 8,08 zł Aż do 2,13 zł
10 7,65 zł Aż do 8,50 zł

Product description: alcohol sensor MQ-3

The sensor determines the concentration of alcohol in the air, the result can be obtained measuring the voltage on the analog output. Through this device, the user can create their own breathalyzer. Sensor can be used, for example, in the module of Arduino or board from the family STM32 Discovery.


Measurement range from 0.04 mg/L to 4 mg/L, it allows you to use it as the breathalyzer


Ratio: 0.1 mg/L = 0,21‰.


Sensor MQ-3 can operate in the temperature range: -10-50°C and consumes no more than 150mA at 5V power supply. More information is contained in documentation of the sensor.

Podstawka pod czujnik MQ-3

In our offer is also the stand facilitating the use

Specification of the sensor MQ-3

  • The supply voltage of 5 V
  • Maximum current consumption: 150 mA
  • Measuring range: 0.04 mg/L 4 mg/L
  • Mounting: THT

Czujnik alkoholu MQ-3

The product is compatible with Arduino

The design of the Breathalyzer on the Arduino and sample code (bildr) together with the connection diagram are available online


Posting the payment for the order on our account on a business day up to 13:00 means sending the goods on the same day!


The time of payment depends on the hours of ELIXIR session of the sender's bank and the recipient of the transfer (more information on this subject, for example on the website


The table presents available forms of delivery in Poland


Carrier and

Bank wire

by cash


Poczta Polska

terms of service

9,90 PLN17,90 PLN1-3 days

Kurier GLS

terms of service

14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
Delivery is for free!


  • Free delivery of orders over 500 PLN does not apply to parcels addressed outside of Poland.
  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.