MQ-3 Alcohol Ethanol Gas Sensor Module (Alcohol Sensor)

Out of stock
Alcohol Sensor (MQ3)
Quick Overview
This module is made using Alcohol Gas Sensor MQ3. It is a low cost semiconductor sensor which can detect the presence of alcohol gases at concentrations from 0.05 mg/L to 10 mg/L. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. It’s conductivity increases as the concentration of alcohol gases increases. It has high sensitivity to alcohol and has a good resistance to disturbances due to smoke, vapor and gasoline

Shipping : 3 to 4 working days from the date of purchase

Call For Price

Secured and trusted checkout with

This MQ-3 Alcohol Detector Gas Sensor Module is simple to use. MQ-3 Alcohol Detector Module which can sense the presence of Alcohol in the air. The module uses our MQ-3 sensor. It simplifies the interface to the odd pin spacing of the sensor and provides an interface through standard 4 x 0.1″ header pins.

It provides an analog output corresponding to the concentration of the gas in the air and an easy to use digital output.

The onboard potentiometer can be used to set the maximum gas concentration beyond which the digital output gets triggered. Just power the module with 5V set the threshold and you can start getting the gas concentration of the air around the sensor! An onboard LED signals the presence of any gas. Perfect sensing alcohol concentration on your breath just likes a common breathalyzer.

The digital output can be easily interfaced to microcontrollers and other circuits. The analog output can be hooked up to an ADC of a microcontroller to get a wide range of sensor readings.


  • Signal output light indicator.
  • Analog and level signal output.
  • TTL output valid signal is low.  (When the output low signal light can be directly connected microcontroller or relay module).
  • The carbon monoxide detection with better sensitivity.
  • It has a long service life and reliable stability.
  • Rapid response recovery features.

Related Projects

1. Efficient Method for Classification of Alcoholic And Normal EEG Signals Using EMD

2. Drunk Driving Detection with Car Ignition Locking Using Raspberry Pi

Alcohol sensor

Alcohol sensor

0% of 100
Write Your Own Review
You're reviewing:MQ-3 Alcohol Ethanol Gas Sensor Module (Alcohol Sensor)
Quote Inquiry Form

Write a descriptive message about what you are inquiring.