MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module

MQ-2 Smoke & Gas Sensor Module detects LPG, Butane, Hydrogen, and smoke levels in the air with high sensitivity. Ideal for gas leakage detection systems and Arduino-based safety projects.

The MQ-2 Gas Sensor Module is a highly sensitive gas detection sensor capable of sensing LPG, Butane, Propane, Methane, Hydrogen, and Smoke concentrations in the air. It provides both analog and digital outputs, making it easy to interface with microcontrollers like Arduino, ESP32, and Raspberry Pi.

The sensor uses an SnO₂ (tin dioxide) layer, whose conductivity changes with the gas concentration, allowing accurate detection. It’s commonly used in home safety systems, gas leakage alarms, and IoT-based air quality monitoring projects.

⚙️ Features

1. Detects LPG, Butane, Methane, Hydrogen, and Smoke
2. High sensitivity and fast response time
3. Analog and digital output for easy interface
4. Adjustable digital output threshold using onboard potentiometer
5. Easy to connect with Arduino, ESP32, or other controllers

📦 Applications

1. Gas leakage detection systems

2. Home safety and fire detection devices

3. Industrial gas monitoring

4. Air quality control projects