MQ-3 Alcohol Gas Sensor Module

🔍 Product Overview

The MQ-3 Alcohol Gas Sensor Module is designed to detect alcohol vapors in the air with excellent sensitivity, making it perfect for breath analyzer systems or alcohol concentration monitoring applications. It offers both analog and digital outputs, providing flexibility for integration with a wide range of microcontrollers and electronic systems.

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🚀 Why It’s Ideal for Your Projects

• Fast and accurate response – Quickly detects changes in alcohol concentration, offering real-time feedback.

• Dual output options – Use the analog output for measuring precise concentration levels or the digital output for simple “detected/not detected” functions.

• Microcontroller compatible – Operates on 5 V and interfaces easily with Arduino, Raspberry Pi, ESP32, or other development boards.

• Adjustable sensitivity – Built-in potentiometer allows you to fine-tune the detection threshold to suit your application.

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🧩 Key Features

• High sensitivity to alcohol vapors (ethanol).

• Output: Analog (variable voltage) and Digital (threshold-based).

• Operating Voltage: 5 V DC.

• Compact and easy to mount for prototyping or production.

• Warm-up time ensures stable and accurate readings.

• Adjustable detection threshold with onboard potentiometer.

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⚙️ Typical Applications

• Breath analyzers – Detect alcohol concentration from human breath.

• Safety systems – Monitor air quality in workplaces, labs, or storage areas for alcohol vapors.

• Smart automation – Trigger alarms, activate ventilation, or send alerts when alcohol is detected.

• Educational projects – Ideal for learning about gas sensors and analog/digital signal interfacing.

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✅ Why You’ll Love It

The MQ-3 sensor combines reliability, sensitivity, and simplicity in one affordable module. It’s perfect for hobbyists, educators, and engineers looking to build alcohol detection or safety monitoring systems with minimal setup and maximum performance.