MQ-3 Gas Sensor Module – Alcohol & Breath Detection Sensor

The MQ-3 Gas Sensor Module is a reliable and highly sensitive sensor specifically designed for detecting alcohol (ethanol) vapors present in the air. It is commonly used in breath alcohol detection applications due to its accuracy, fast response time, and stable performance. The module is easy to use and well-suited for both simple DIY projects and advanced embedded systems.

The sensor supports both analog and digital output signals, allowing seamless integration with a wide range of microcontrollers such as Arduino, Raspberry Pi, ESP32, ESP8266, PIC, and STM32. This flexibility makes it ideal for developers, students, and professionals working on alcohol monitoring and safety-related projects.

Operating on a standard 5V DC power supply, the MQ-3 module can detect alcohol concentration levels ranging from 0.04 mg/L to 4 mg/L in the air. Its sensitive sensing element ensures quick detection as well as fast recovery, enabling real-time monitoring in practical applications. The durable construction of the sensor element provides long-term stability and consistent performance.

The compact module design includes a pin header, making it easy to connect directly to development boards or breadboards without additional components. This simplifies installation and reduces setup time, especially for beginners and rapid prototyping.

The MQ-3 Gas Sensor Module is widely used in breath alcohol detection devices, alcohol monitoring systems, home and industrial safety equipment, IoT-based monitoring solutions, robotics, automation, and general DIY electronics projects. Its versatility and ease of integration make it suitable for a broad range of real-world applications.

Choosing the MQ-3 sensor module means selecting a proven, efficient, and user-friendly solution for alcohol detection. Its balance of accuracy, durability, and compatibility makes it an excellent choice for anyone developing reliable alcohol sensing and monitoring systems.