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MQ-5 Methane/LPG Gas Sensor Module

SKU: VAS9Y9RP8R
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The MQ-5 Methane/LPG Gas Sensor Module is a semiconductor-based combustible gas detection module designed to detect LPG (Liquefied Petroleum Gas), methane (CH₄), propane, butane, natural gas, hydrogen, and town gas. Built around the MQ-5 gas sensor and an onboard LM393 voltage comparator, the module provides both analog (AO) and digital (DO) outputs for easy interfacing with microcontrollers. The sensor utilizes...
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The MQ-5 Methane/LPG Gas Sensor Module is a semiconductor-based combustible gas detection module designed to detect LPG (Liquefied Petroleum Gas), methane (CH₄), propane, butane, natural gas, hydrogen, and town gas. Built around the MQ-5 gas sensor and an onboard LM393 voltage comparator, the module provides both analog (AO) and digital (DO) outputs for easy interfacing with microcontrollers. The sensor utilizes a tin dioxide (SnO₂) sensing element whose conductivity increases when exposed to combustible gases, enabling reliable gas concentration detection.

Operating from a 5V DC supply, the module features an adjustable sensitivity potentiometer that allows users to configure the digital detection threshold according to their application. It offers high sensitivity to LPG, methane, propane, and butane, while maintaining relatively low sensitivity to alcohol and smoke. The module is widely used in gas leakage alarms, industrial safety systems, smart home monitoring, kitchen gas detectors, IoT safety devices, and educational electronics projects. Compatible with Arduino, ESP32, STM32, Raspberry Pi (with ADC where required), PIC, AVR, and other microcontrollers, the MQ-5 provides a cost-effective solution for combustible gas detection.

Key Features

  • Based on the MQ-5 semiconductor gas sensor
  • High sensitivity to LPG and methane
  • Detects propane, butane, natural gas, hydrogen, and town gas
  • Dual analog and digital outputs
  • Built-in LM393 voltage comparator
  • Adjustable detection threshold using onboard potentiometer
  • Fast response and recovery time
  • Stable and reliable performance
  • Long operational life
  • Power and output indicator LEDs
  • Operates from 5V DC
  • Easy interface with Arduino, ESP32, STM32, Raspberry Pi, AVR, and PIC
  • Compact PCB with mounting holes
  • Ideal for gas leakage detection and industrial safety applications

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: Combustible Gas Sensor Module
Sensor Model: MQ-5
Sensor Technology: Semiconductor (SnO₂)
Comparator IC: LM393
Operating Voltage: 5V DC
Operating Current: Approximately 150mA
Heater Voltage: 5V ±0.1V
Heater Resistance: Approximately 31Ω ±3Ω
Heating Power Consumption: Less than 900mW
Target Gases: LPG, Methane (CH₄), Propane, Butane, Natural Gas, Hydrogen, Town Gas
Detection Range: Approximately 200–10000ppm (Combustible Gases)
Output Type: Analog (AO) and Digital (DO)
Digital Output: TTL Logic Level
Analog Output Voltage: 0V–5V (Relative to Gas Concentration)
Sensitivity Adjustment: Onboard Potentiometer
Response Time: Fast Response
Recovery Time: Fast Recovery
Preheat Time: Recommended 24–48 Hours for Initial Calibration; Short Warm-Up Required Before Regular Use
Operating Temperature: -10°C to +50°C
Operating Humidity: Up to 95% RH (Non-Condensing)
Module Dimensions: Approximately 32mm × 22mm × 27mm
Mounting Type: PCB Module with Mounting Holes
Compatibility: Arduino UNO, Nano, Mega, ESP32, STM32, Raspberry Pi (with ADC where required), AVR, PIC, 8051 and other microcontrollers

Additional Resources

MQ-5.PDF

FAQ

1. What is the MQ-5 Methane/LPG Gas Sensor Module used for?

The MQ-5 module is used to detect combustible gases such as LPG, methane, propane, butane, natural gas, hydrogen, and town gas. It is commonly used in gas leakage alarms, industrial safety systems, kitchen monitoring, and IoT-based safety projects.

2. Does the MQ-5 module provide both analog and digital outputs?

Yes. The module provides an analog output (AO) proportional to the gas concentration and a digital output (DO) with an adjustable detection threshold using the onboard potentiometer.

3. Can the MQ-5 sensor be used with Arduino and ESP32?

Yes. The MQ-5 is compatible with Arduino, ESP32, STM32, AVR, PIC, and Raspberry Pi (with an external ADC where required). Its analog and digital outputs make it easy to integrate into embedded systems.

4. Why does the MQ-5 sensor require a preheating period?

The MQ-5 contains an internal heater that stabilizes the SnO₂ sensing element. An initial burn-in period of 24–48 hours is recommended for new sensors, followed by a short warm-up period before regular operation for improved measurement stability.

5. Which gases can the MQ-5 sensor detect?

The MQ-5 is highly sensitive to LPG, methane, propane, and butane, and can also detect natural gas, hydrogen, and town gas. It has relatively low sensitivity to alcohol and smoke, reducing unwanted interference in combustible gas detection applications.