MQ-5 Gas Sensor Module LPG Natural Gas Detection for Arduino & ESP32

The MQ-5 gas sensor is a high sensitivity semiconductor sensor used for detecting LPG, methane (CH₄), natural gas, and town gas. It is widely applied in gas leakage alarms, industrial safety systems, home safety projects, and IoT gas monitoring solutions.

This module offers fast response, stable output, and long service life. It includes an onboard comparator, allowing both analog output for gas concentration measurement and digital output for threshold based alarm triggering.

The MQ-5 sensor is fully compatible with Arduino, ESP32, ESP8266, STM32, Raspberry Pi, and other MCU platforms, making it suitable for DIY electronics, research, and industrial prototypes.

Key Features

• Detects LPG, methane, natural gas, and town gas

• High sensitivity and quick response time

• Analog and digital output signals

• Adjustable sensitivity using onboard potentiometer

• Compatible with Arduino, ESP32, ESP8266, STM32

• Stable performance and long operational life

• Low cost solution for gas leakage detection

• Ideal for home, industrial, and IoT safety systems

Technical Specifications

• Sensor Type: Semiconductor gas sensor

• Target Gases: LPG, CH₄, natural gas, town gas

• Detection Range: 200 – 10,000 ppm (approx.)

• Output Type: Analog (AO) + Digital (DO)

• Operating Voltage: 5V DC

• Heater Voltage: 5V

• Interface: Analog / Digital

• Response Time: ≤10 seconds

• Preheat Time: 24–48 hours recommended

• Operating Temperature: -10°C to +50°C

• Operating Humidity: ≤95% RH

 Applications

• LPG gas leakage detectors

• Natural gas safety alarms

• Industrial gas monitoring systems

• Smart home gas detection

• Arduino and ESP32 gas sensor projects

• IoT based safety systems

• Educational and research projects