MQ3 Alcohol Gas Detection Sensor – Reliable Breath Analyzer Module for Arduino Projects

The MQ3 Alcohol Gas Detection Sensor is a widely used and highly reliable module designed to detect alcohol vapors in the air. This sensor is commonly used in breath analyzers, safety devices, and Arduino-based projects due to its high sensitivity to alcohol gases and fast response time. It is an essential component for students, hobbyists, and professionals working on alcohol detection systems.

Electroxbd, your trusted source for reliable electronic parts in Rajshahi, Bangladesh, offers the MQ3 sensor with fast nationwide delivery. Whether you are building a DIY breath analyzer or a safety monitoring device, this sensor ensures accurate, stable, and cost-effective performance.

Features of MQ3 Alcohol Gas Detection Sensor

• High Sensitivity to Alcohol Vapors – Detects even low concentrations of alcohol in the air.

• Wide Detection Range – Capable of measuring alcohol levels from 0.04 mg/L to 4 mg/L.

• Fast Response and Recovery Time – Ensures real-time and accurate readings.

• Analog and Digital Outputs – Compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and other microcontrollers.

• Durable and Easy to Use – Compact design makes it ideal for integration in various projects.

Technical Specifications of MQ3 Sensor

• Operating Voltage: 5V DC

• Detectable Gas: Alcohol vapors (ethanol)

• Concentration Range: 0.04 mg/L – 4 mg/L alcohol

• Heater Resistance: 31Ω ± 3Ω

• Load Resistance: Adjustable with onboard potentiometer

• Preheat Time: 20 seconds (recommended for stable performance)

• Output: Analog signal and TTL digital signal

Applications of MQ3 Alcohol Gas Detection Sensor

The MQ3 sensor has versatile applications in both DIY and industrial projects:

1. Breath Analyzers – Used in alcohol breath testers to detect blood alcohol content (BAC).

2. Vehicle Safety Systems – Integrated into cars to prevent drunk driving.

3. Industrial Safety Equipment – Ensures a safe working environment by detecting alcohol vapors.

4. Smart Home Projects – Can be used with Arduino/ESP boards for custom safety systems.

5. Educational and Research Projects – Widely used in engineering labs and student projects for alcohol detection experiments.

Working Principle of MQ3 Alcohol Gas Detection Sensor

The MQ3 sensor uses a tin dioxide (SnO2) semiconductor layer that changes its electrical resistance when exposed to alcohol vapors. In clean air, the resistance is high, but when alcohol molecules interact with the sensor surface, the resistance drops. This change is measured as an analog signal and can be processed by a microcontroller.

With its built-in potentiometer, the sensitivity can be adjusted, allowing users to calibrate the sensor according to their project requirements.

Why Choose MQ3 Alcohol Gas Detection Sensor from Electroxbd?

At Electroxbd, we provide original and tested MQ3 sensors to ensure quality and reliability. Here’s why you should buy from us:

• 📦 Fast Delivery Across Bangladesh – Order from anywhere, get it delivered quickly.

• 🏬 Available in Rajshahi Store – Visit us at Opposite RH Chhatrabash, Madrasha More, Rajshahi.

• 💯 Trusted Electronic Parts Supplier – Serving students, hobbyists, and professionals.

• 🔧 Technical Support – Guidance for Arduino and IoT projects.

• 🔒 Quality Assurance – Each sensor is tested before shipping.

Conclusion

The MQ3 Alcohol Gas Detection Sensor is a must-have module for anyone working on alcohol detection projects. With its high sensitivity, wide detection range, and easy compatibility with microcontrollers, it is perfect for breath analyzers, vehicle safety systems, and educational experiments.

Order today from Electroxbd – Trusted Source for Reliable Electronic Parts. Our store is located at Opposite RH Chhatrabash, Madrasha More, Rajshahi, Bangladesh, and we provide nationwide delivery so you can get your required components fast.

Upgrade your Arduino or IoT project with the MQ3 Alcohol Gas Detection Sensor and ensure accurate and dependable alcohol vapor detection.

Common Questions:

Q: What is the price of MQ3 Alcohol Gas Detection Sensor in Bangladesh?

A: The latest price of MQ3 Alcohol Gas Detection Sensor in Bangladesh is 150 BDT.

Q: Where to buy MQ3 Alcohol Gas Detection Sensor in Bangladesh?

A: You can buy the MQ3 Alcohol Gas Detection Sensor at the best price from ElectroXBD in Bangladesh.