MQ3 Alcohol Detector Gas Sensor Module

Description :

The MQ-3 is a gas sensor module designed to detect the presence of alcohol vapor in the air. It's commonly used in applications such as breathalyzer projects, alcohol detection systems, and other safety-related devices. Here are some key features and information about the MQ-3 Alcohol Detector Gas Sensor Module:

Key Features :

1. Gas Detection :The MQ-3 sensor is specifically designed to detect alcohol vapor in the air.
2. Analog Output :The module typically provides an analog voltage output that varies based on the concentration of alcohol in the detected air. The higher the alcohol concentration, the higher the analog voltage.
3. Heating Element :Like other MQ series sensors, the MQ-3 sensor contains a heating element that warms up the sensing element for accurate and stable readings.
4. High Sensitivity :The MQ-3 sensor is known for its high sensitivity to alcohol vapor, making it suitable for alcohol detection applications.
5. Application Range :Commonly used in breathalyzer projects, safety systems, and other applications where the detection of alcohol vapor is important.
6. Interfacing with Microcontrollers : The MQ-3 sensor can be easily interfaced with microcontrollers like Arduino for integration into electronic projects.
7. Calibration :Calibration may be required for accurate alcohol concentration readings. Refer to the sensor's datasheet for specific calibration instructions.

Pin Configuration:

The MQ-3 sensor typically has the following pin configuration:

• VCC: Power supply (5V)
• GND: Ground
• AOUT: Analog output (connects to an analog input pin on a microcontroller)
• DOUT: Digital output (some modules may have a digital output pin)

Wiring:

Here's a basic wiring example for connecting the MQ-3 sensor to an Arduino:

Technical Specification :

Package Include :

• 1 x MQ3 Alcohol Detector Gas Sensor Module.