MQ-3 Alcohol Gas Sensor Module
● In Stock
| SKU | AT-0110 |
| Category | Sensors |
| Availability | In Stock |
| Shipping | Countrywide delivery · Free on orders over KSh10,000.00 |
Description
To detect alcohol vapor in the air, reach for the MQ-3 Alcohol Sensor Module: a highly sensitive gas detection module. It is especially optimized for ethanol and is commonly used in breathalyzer projects, alcohol detection systems, vehicle safety devices, smart monitoring systems, and Arduino-based electronics projects. The module uses a semiconductor gas sensor that changes its resistance when exposed to alcohol vapor. An onboard comparator circuit converts this change into both analog and digital outputs, making it easy to interface with Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers. The MQ-3 sensor is most sensitive to alcohol and ethanol vapors, but it can also respond
Key Features
- Detects alcohol and ethanol vapor
- High sensitivity to alcohol gas
- Analog and digital output
- Adjustable sensitivity using onboard potentiometer
- Compatible with Arduino, ESP32, STM32, Raspberry Pi, and other microcontrollers
- Fast response and recovery time
- Onboard power and output indicator LEDs
- Suitable for breathalyzer and gas detection projects
Specifications
| Operating voltage | 5V DC |
|---|---|
| Detection range | approximately 0.04–4 mg/L alcohol concentration |
| Easy 4-pin interface | VCC, GND, AO, DO |
| Typical module size | approximately 32 × 22 × 27 mm |
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