Keyestudio EASY plug Analog Alcohol Ethanol Sensor MQ-3 Breath Gas Detection for Arduino STEAM

The Keyestudio EASY plug MQ-3 Analog Alcohol Sensor is a specialized gas detection module designed for students, educators, and hobbyists building STEAM projects. Ideal for creating DIY breath analysers, this sensor offers high sensitivity to alcohol and ethanol with a simple, plug-and-play connection system.

Targeted alcohol and ethanol detection

This MQ-3 gas sensor is highly sensitive to alcohol and ethanol, making it ideal for breath analyser projects. It maintains a low sensitivity to benzine to prevent false readings during testing.

Adjustable sensitivity calibration

Fine-tune your sensor's threshold using the onboard blue potentiometer. This allows you to calibrate the detection limits precisely for your specific environment or project requirements.

EASY plug interface

Designed for seamless integration, this module features an EASY plug connector that simplifies wiring. It must be used together with an EASY plug control board to ensure correct connections without soldering.

Dual digital and analog outputs

The sensor provides both digital and analog outputs, giving you the flexibility to read precise gas concentration levels or simple threshold triggers. It operates on a standard 5V power supply.

Compact and durable design

Built with a simple drive circuit, this sensor offers quick response times and a stable, long service life. Its compact dimensions of 56mm by 20mm by 18mm and light weight of 7.5g make it easy to mount in portable enclosures.

Comprehensive learning resources

To help you get started quickly, a dedicated Wiki page tutorial is available. This guide provides step-by-step instructions for integrating the sensor into your Arduino-based STEAM curriculum.