MQ-6 LPG/Propane Gas Sensor Module

MQ-6 LPG Propane Butane Gas Sensor Module – High Sensitivity Combustible Gas Detection

The MQ-6 Gas Sensor Module is designed for detecting LPG, propane, and butane gases in the air, making it ideal for safety and leak-detection applications.
It can sense gas concentrations from 200 to 10,000 ppm with high accuracy.
The sensor features fast response and recovery times, offering real-time monitoring for home and industrial environments.

Its sensing element is made of SnO₂ (tin dioxide), which has low conductivity in clean air. When combustible gases are present, conductivity increases proportionally, allowing the sensor to output a corresponding analog voltage.
With a simple 5V heating circuit and basic load-resistor interface, this module is easy to integrate with microcontrollers such as Arduino, ESP32, and Raspberry Pi.

The MQ-6 offers excellent sensitivity to propane, butane, LPG, methane, and hydrogen, while maintaining stability over long-term use.
Its dual output (analog + TTL digital) makes it suitable for both threshold-based detection and continuous gas-level measurement.

Applications

• Home gas leakage detectors
• Industrial combustible gas monitoring systems
• Portable gas detectors and safety alarms

Features

• High sensitivity to propane, butane, LPG, methane, and hydrogen.
• Wide detection range (200–10,000 ppm) with fast response and recovery.
• Simple 5V drive circuit and dual output: analog voltage + TTL digital signal.
• TTL output goes LOW when gas is detected; easily interfaces with microcontrollers.
• Analog 0–5V output increases with rising gas concentration.
• Resistant to interference from ethanol vapor, smoke, and other gases.
• Long lifespan with stable and reliable performance.

Package Includes

• 1 × MQ-6 LPG / Propane / Butane Gas Sensor Module