MQ3 sensor Module

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৳170

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৳170

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MQ-3 Gas Sensor Module is a specialized alcohol detection sensor designed to sense ethanol, alcohol vapor, and alcohol-based gases with high sensitivity. It works by changing its internal resistance when exposed to alcohol, producing an electrical signal that can be measured by electronic systems.

The module provides both analog output for measuring alcohol concentration levels and digital output for threshold-based detection. An onboard potentiometer allows easy adjustment of sensitivity according to application requirements. For accurate readings, the sensor requires a short pre-heating time before use.

MQ-3 Sensor Module can be easily interfaced with Arduino, ESP8266, ESP32, and other microcontrollers. It is commonly used in breath alcohol testers, drunk-driving detection systems, safety alarms, IoT monitoring projects, and electronics training kits. Its reliability and ease of use make it suitable for students, hobbyists, and professionals.

🔹 Key Technical Information (Important)

Sensor Type: Alcohol Gas Sensor Module
Sensor Model: MQ-3
Detectable Gas: Alcohol / Ethanol vapor
Operating Voltage: 5V DC
Output Types: Analog & Digital
Sensitivity Adjustment: Onboard potentiometer
Requires pre-heating for stable output
LED status indicator

🔹 Common Applications

Breath alcohol detection systems
Drunk-driving alert projects
Arduino and IoT safety applications
Alcohol leakage monitoring
Educational electronics experiments
Smart safety and monitoring systems

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