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The MQ-6 Gas Sensor Module is an essential component in gas leakage detection equipment for both household and industrial applications. This module offers high sensitivity to various gases such as LPG, iso-butane, propane, LNG, alcohol, cooking fumes, and cigarette smoke. It provides accurate detection and measurement of gas concentrations and is compatible with Arduino and Raspberry Pi for easy integration into your projects.

Key Features:

  1. Voltage: 5V
  2. Detecting Concentration:
    – 200-10000 ppm LPG
    – iso-butane
    – propane
    – LNG
  3. Analog and Digital Output
  4. Digital Output: High or Low based on an adjustable preset threshold

How It Works:

The MQ-6 Gas Sensor Module utilizes a sensitive material called SnO2 (tin dioxide), which exhibits lower conductivity in clean air. As the concentration of the target combustible gas increases, the sensor’s conductivity rises accordingly. By employing a simple electrocircuit, the change in conductivity is converted into a corresponding output signal representing the gas concentration.

The sensor provides both analog and digital outputs. The analog output delivers a voltage proportional to the gas concentration, allowing for precise measurements using an analog-to-digital converter (ADC). The digital output employs an onboard comparator, which compares the gas concentration against an adjustable preset value. This feature provides a straightforward way to determine whether the gas concentration exceeds the predefined threshold, generating a digital high or low signal accordingly.

The MQ-6 Gas Sensor Module finds applications in various scenarios, including:

  1. Domestic gas leakage detection: Ensure the safety of your home by detecting and alerting you to potential gas leaks, such as LPG or natural gas.
  2. Industrial combustible gas detection: Monitor gas concentrations in industrial environments to prevent accidents and ensure workplace safety.

Portable gas detection: Create portable gas detectors for personal safety and emergency situations.


  • Operating Voltage: 5V DC
  • Sensing Material: SnO2 (Tin Dioxide)
  • Sensitivity:
    – Propane, Butane, LPG: High sensitivity
    – Natural Gas: Moderate sensitivity
  • Response Time: Fast
  • Gas Concentration Range: 200-10000 ppm
  • Output Type:
    – Analog: Voltage proportional to gas concentration
    – Digital: High or Low based on preset threshold

Please note that the MQ-6 Gas Sensor Module is a cost-effective solution suitable for various gas detection applications. Its high sensitivity, fast response time, and ease of integration make it an excellent choice for both hobbyists and professionals.

Dimensions 3.2 × 2.0 × 2.2 cm


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