Keyestudio MQ-3 Alcohol Ethanol Sensor Detection Module for Arduino

The Keyestudio MQ-3 Alcohol Ethanol Sensor Detection Module is a highly sensitive analog gas sensor designed to detect alcohol levels in the air. It is an ideal choice for students, makers, and educators building DIY breath analysers or environmental monitoring projects with Arduino.

Targeted ethanol detection

This MQ-3 sensor is specifically designed to detect alcohol with high selectivity, offering high sensitivity to ethanol while remaining less sensitive to benzine. This makes it highly effective for breath analyser projects and alcohol vapour detection.

Adjustable sensitivity threshold

The module features an on-board potentiometer that allows you to manually adjust the sensor's sensitivity. By simply rotating the potentiometer, you can fine-tune the detection threshold to suit your specific project requirements.

Simple analog interface

Operating on a 5V power supply, this module provides an analog output that represents the concentration of detected alcohol. The simple drive circuit ensures straightforward integration with Arduino and other compatible microcontrollers.

Rapid response and stability

Designed for reliable long-term use, the sensor offers a quick response time to changes in gas concentration. Its stable performance and long service life make it suitable for continuous monitoring applications.

Arduino software support

To help you get started quickly, the module is supported by an online wiki tutorial and Arduino software examples. This makes it an excellent learning tool for classroom environments and hobbyist workshops.