Description

🍻 MQ-3 Alcohol Sensor Module – Reliable Alcohol Vapor Detection

The MQ-3 Alcohol Sensor Module is a high-sensitivity gas sensor designed to detect alcohol vapors in the air. Perfect for breathalyzer projects, safety systems, and environmental monitoring, it offers both analog and digital outputs for flexible interfacing with microcontrollers like Arduino, ESP32, and Raspberry Pi.

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🔑 Key Features

• ✅ High Sensitivity: Specifically tuned for detecting alcohol vapor concentrations.
• ⚡ Fast Response & Recovery: Quick detection and reset time for real-time monitoring.
• 🔧 Dual Output Options: Use analog for variable readings or digital for threshold-based detection.
• 🔩 Adjustable Sensitivity: Onboard potentiometer lets you calibrate the digital output threshold.

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📊 Technical Specifications

Parameter	Value
Operating Voltage	5V DC
Detection Range	10 – 1000 ppm alcohol
Heating Power	<750mW
Output Signals	Analog & Digital
Preheat Time	≥24 hours for optimal accuracy
Module Dimensions	32mm × 20mm × 22mm

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⚙️ Applications

• 🍷 Breathalyzer Projects: Detect breath alcohol levels in DIY or educational builds.
• 🏭 Safety Systems: Integrate into systems that monitor worker sobriety or air quality.
• 🧪 Environmental Monitoring: Track alcohol vapor presence in laboratories or storage areas.
• 🛠️ Microcontroller Projects: Plug into Arduino or Raspberry Pi for real-time gas sensing.

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🧠 How It Works

The sensor contains a heating element and a sensitive layer that reacts to alcohol vapors, changing its resistance. This resistance shift is converted into an analog signal, and when it crosses a set threshold, the digital pin activates.

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📦 Package Includes

• 1 × MQ-3 Alcohol Gas Sensor Module

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🚀 Build Smarter Detection Systems

Whether you’re working on a breathalyzer, air quality monitor, or alcohol detection alarm, the MQ-3 module provides a reliable and cost-effective solution. Order yours now and start sensing with precision!