MQ 3 Gas Sensor

🍺 MQ-3 Gas Sensor Module – Alcohol Detection for Breathalyzers & Safety Systems
The MQ-3 Gas Sensor Module is designed to detect alcohol vapors in the air, making it ideal for breathalyzers, vehicle safety systems, and leak detection. It features high sensitivity, fast response time, and is easy to integrate into Arduino and other microcontroller projects. 🚗🔍

🔧 Key Features
🧠 Sensor Type: MQ-3
🍷 Detects: Alcohol vapors (ethanol, benzene, some smoke)
📟 Output: Analog (A0) + Digital (D0)
⚡ Operating Voltage: 5V DC
🔧 Adjustable sensitivity via onboard potentiometer
💡 Onboard Power & Signal indicator LEDs
📏 Long lifespan and stable output

📦 Package Includes
✅ 1x MQ-3 Alcohol Gas Sensor Module
📄 Pinout: VCC, GND, A0, D0
🧰 Compatible with Arduino, ESP32, Raspberry Pi, STM32, etc.

🧠 Perfect For
🚗 Smart car breath detection systems
🍺 DIY breathalyzer projects
🏭 Workplace safety automation
📦 Alcohol vapor detection and control
🎓 STEM, IoT, and electronics learning kits

🛠️ How It Works
1️⃣ Built-in heater activates the sensor
2️⃣ Sensor reacts to alcohol vapors and outputs analog voltage
3️⃣ Digital pin (D0) triggers when threshold is crossed
📲 Connect to a buzzer or display for alerts or measurements

💡 Pro Tip: Pair with an OLED or 7-segment display to build a compact, portable breathalyzer or alcohol detection system!

🚚 Shipping & Delivery
We offer fast nationwide delivery across Pakistan. Orders are processed within 24 hours and usually delivered within 2–4 working days. All products are securely packed for safe arrival.

📦 For more details, see our Shipping Policy
📦 For more details, see our Return & Refund Policy