MQ-5 LPG Methane Natural Gas Sensor Module

The MQ-5 LPG Methane Natural Gas Sensor Module is a high-performance gas detection sensor designed for measuring LPG, methane (CH₄), hydrogen (H₂), and natural gas concentrations in the air. Built with a SnO₂ semiconductor gas-sensitive layer, the MQ-5 offers fast response, high sensitivity, and excellent stability for a wide range of gas detection applications.

Operating at 5V DC, the MQ-5 module includes both analog (AO) and digital (DO) outputs. This dual interface allows seamless connection with Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontroller platforms. The onboard LM393 comparator IC and adjustable potentiometer allow users to set a custom threshold for digital triggering — perfect for designing gas alarms or safety systems.

The sensor’s sensitivity to LPG, methane, and hydrogen makes it suitable for domestic, automotive, and industrial gas leak detection projects. With a compact and durable PCB layout, built-in power and signal indicator LEDs, and stable performance, the MQ-5 is an essential component for IoT gas monitoring systems and smart home safety projects.

When used in Arduino-based setups, users can easily monitor analog readings to detect small gas concentration changes or use the digital output to trigger alerts when thresholds are crossed. Its reliability, cost-effectiveness, and simplicity make it a popular choice among students, developers, and engineers.

Get your MQ-5 LPG Methane Natural Gas Sensor Module today from eleberric.com, Sri Lanka’s trusted source for Arduino sensors, IoT modules, and electronic components.

Specification

• Model: MQ-5

• Operating Voltage: 5V DC

• Sensor Type: Semiconductor (SnO₂)

• Detection Range: 200 ppm to 10,000 ppm (LPG, CH₄, H₂)

• Output: Analog (AO) and Digital (DO)

• Sensitivity: High to LPG, methane, natural gas, and hydrogen

• Preheat Time: 20 seconds (typical)

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

• Dimensions: Approx. 32mm × 22mm × 27mm

• Weight: Approx. 25g

Key Features

• High sensitivity to LPG, methane, and hydrogen gases

• Dual output interface for analog and digital signals

• Adjustable threshold with onboard potentiometer

• Fast response and stable detection performance

• Integrated power and signal indicator LEDs

• LM393 comparator for precise digital output control

• Easy interface with Arduino, ESP8266, ESP32, Raspberry Pi

Applications

• LPG and methane gas leakage detection

• Home and industrial safety systems

• Smart IoT-based gas monitoring projects

• Gas leak alarm and alert systems

• Portable gas detectors

• Educational and prototyping projects with Arduino