The MQ-3 Alcohol Sensor Module is a compact electronic gas-sensing board used to detect alcohol vapour in the surrounding air. It is a popular building block for hobby electronics, school and university projects, prototyping, and DIY automation builds. The module suits makers, students, and engineers who work with Arduino, ESP32, Raspberry Pi, and other microcontroller platforms and want a simple, ready-to-wire sensor for their breadboard or PCB.
Key features
- Based on the well-known MQ-3 gas sensor element.
- Provides both analog and digital output pins for flexible reading.
- On-board adjustment for setting the detection threshold.
- Standard header pins for easy breadboard and jumper-wire connection.
- Compatible with Arduino, ESP, and most common microcontroller boards.
Typical uses
- Electronics learning kits and lab experiments.
- Arduino and microcontroller prototyping projects.
- DIY detection and alarm builds for hobby use.
- Robotics and automation student projects.
How to choose / tips
- Confirm your board's logic voltage before wiring the module.
- Allow the sensor a short warm-up time for more stable readings.
- Use the analog output when you need a varying signal, and the digital output for simple on/off triggering.
Why tna W rna
At tna W rna we focus on reliable electronic components, careful sourcing, and honest product information. Enjoy fast delivery across Egypt and the convenience of cash on delivery, so you can get your project parts quickly and with confidence.
