Mikroe Alcohol Click


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SKU: 1314934
  1. Concentration: 0.04-4mg/l alcohol
  2. Sensitivity: Rs(in air)/Rs(0.4mg/alcohol)≥5
  3. Interface: Analog
  4. Compatibility: MikroBUS
  5. Click board size: 42.9 x 25.4 mm
  6. Input Voltage 3.3V, 5V


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Category: Gas and Dust Sensor

Alcohol click has a high sensitivity to alcohol and it can be used to detect alcohol in concentrations from 0.04 to 4mg/l.

Alcohol click carries an MQ-3 Semiconductor sensor for alcohol. The click is designed to run on a 5V power supply only. It communicates with the target microcontroller through the AN pin on the mikroBUS line.

MQ-3 sensor features:
The gas sensing layer on the sensor unit is made of Tin dioxide (SnO2), an inorganic compound that has lower conductivity in clean air. The conductivity increases as the levels of alcohol gas rise.

Calibrating the sensor:
To calibrate the sensor for the environment you’ll be using it in, Alcohol click has a small potentiometer that allows you to adjust the Load Resistance of the sensor circuit.

Applications: Portable alcohol detector, a breathalyzer for estimating BAC (blood alcohol content)


  1. Concentration: 0.04-4mg/l alcohol
  2. Sensitivity: Rs(in air)/Rs(0.4mg/alcohol)≥5Interface: Analog
  3. Compatibility: MikroBUS
  4. On-board modules: MQ-3 Semiconductor sensor for alcohol

Useful Links:

Package Includes:

1 x Mikroe Alcohol Click


SKU: 1314934 Category:

0.04-4mg/l alcohol


Rs(in air)/Rs(0.4mg/alcohol)≥5



Board Size (mm)

42.9 x 25.4 mm

Input Voltage (V)

3.3V, 5V



Shipping Weight 0.07 kg
Shipping Dimensions 7 × 5 × 3 cm

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Country Of Origin: China