Smoke and flammable gas sensor MQ-2 - semiconductor - black module*

Module with smoke detector and flammable gas MQ-2 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.

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Price 14,90 zł


  • Power supply: 5 V
  • Current consumption: 150 mA
  • Measuring range up to 10,000 ppm
  • Operating temperature: -20 to 50 °C
  • Analog and digital output
  • Pins: goldpin connectors, 2.54 mm pitch
  • Dimensions: 35 x 22 x 25 mm
  • It has mounting holes with diameter: 3.2 mm


Features and other details are specified in the documentation of the sensor.



The sensor measures the concentration of flammable gases in the air, the result can be obtained measuring the voltage on the analog output. The system is powered with the voltage of 5 V. Current consumption is about 150 mA. It has digital and analog output, making it compatible with most of the commissioning modules including Raspberry Pi and Arduino.

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, including Arduino, or for example, a module with a buzzer, which will signal a too low or too high level of unwanted gases 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 in Arduino). This will allow you to measure the proportional voltage signal and more accurately determine the concentration.


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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.