MQ-5 Methane LPG Liquid Propane Gas Sensor Module
Review: 5 - "A masterpiece of literature" by John Doe, written onMay 4, 20020

MQ-5 Methane LPG Liquid Propane Gas Sensor Module

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  • Product SKU: KG054
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The MQ-5 Methane LPG Liquid Propane Gas Sensor Module is a widely used sensor for detecting methane and LPG (liquefied petroleum gas) vapors.

Here's an overview of the MQ-5 sensor module:

Purpose: The MQ-5 sensor module is designed to detect gases like methane and LPG, making it valuable for applications where gas leakage needs to be monitored.

Sensitivity: It has a high sensitivity to methane and LPG gases.

Principle: The sensor operates on the principle of a semiconductor gas sensor, where the resistance of the sensing material changes based on the concentration of the target gases.


Analog and Digital Output: Similar to other MQ series sensors, the MQ-5 module provides both analog and digital outputs. The analog output can be used to estimate the gas concentration, while the digital output can be configured to trigger alerts when gas concentration surpasses a predefined threshold.

Adjustable Sensitivity: Many modules come with a potentiometer that allows users to adjust the sensor's sensitivity.

Affordability: The MQ-5 sensor module is cost-effective, making it a popular choice for gas detection projects.


Gas Leakage Detection: The MQ-5 sensor is commonly used to detect methane and LPG leaks in homes, industries, and commercial spaces. It's particularly useful in preventing potential explosions due to gas leaks.

Safety in Kitchens: It can be employed in kitchens where LPG is used for cooking, ensuring early detection of gas leaks and promoting safety.

Industrial Safety: In environments where methane or LPG gases are present, the sensor can provide early warnings to protect workers and equipment.

Environmental Monitoring: The sensor can also be used to monitor methane emissions from sources like landfills.

Using the MQ-7:

Powering the Sensor: The sensor usually requires a 5V DC power supply.

Calibration: To achieve accurate readings, calibration may be necessary. This involves exposing the sensor to clean air to establish a baseline resistance value.

Reading Values: Like previous MQ series sensors, you can use a microcontroller (such as Arduino) to read values from the MQ-5 sensor. Connect the analog output to an analog pin and the digital output to a digital input pin on the microcontroller.


Warm-Up Time: The sensor may require some time to warm up before it provides reliable readings.

Cross-Sensitivity: The MQ-5 sensor might exhibit cross-sensitivity to gases other than methane and LPG. This can impact accuracy if other gases are present in the environment.

Environmental Factors: As with all gas sensors, environmental conditions like temperature and humidity can influence their performance.

When integrating the MQ-5 Methane LPG Liquid Propane Gas Sensor Module into a project, proper calibration and considering potential cross-sensitivity are crucial for obtaining accurate and reliable gas concentration readings.

Technical Details of MQ-5 Sensor Module

  • Model: MQ-5
  • Operating Voltage (VDC): 5
  • Operating Temperature (°C): -20 to 40

Physical Attributes

  • Length * Width * Height (mm): 32 x 20 x 22
  • Weight (gm): 8

Integration with Arduino: MQ-5 Sensor Module

MQ-5 Sensor Module

Sample Code

Additional Details: MQ-5 Sensor Module

  • High sensitivity to LPG, natural gas, and town gas.
  • Small sensitivity to alcohol, and smoke.
  • Stable and long life.
  • Simple drive circuit.
  • Fast response.

Product Video


Package Includes

  • 1 x MQ-5 Methane LPG Liquid Propane Gas Sensor Module

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