MQ2 Gas Sensor Module – Smoke, LPG, Methane, Hydrogen Detection

The MQ2 Gas Sensor Module is a sensitive and reliable gas detection device designed for monitoring a variety of combustible gases such as LPG, Methane, Butane, Propane, Hydrogen, Alcohol, and Smoke. Built around the MQ2 Semiconductor Gas Sensor, this module provides both analog and digital outputs, making it a versatile choice for gas leakage detection systems, smoke alarms, and air quality monitoring projects.

With adjustable sensitivity through an onboard potentiometer, the MQ2 is ideal for integrating into DIY electronics, IoT-based safety systems, industrial gas leak detectors, and smart home automation solutions. Fully compatible with Arduino, ESP32, Raspberry Pi, and other microcontroller platforms, it enables rapid prototyping and reliable real-world applications.

Key Features:

• Operating Voltage: 5V DC

• Detection Gases: LPG, Methane, Butane, Propane, Hydrogen, Alcohol, Smoke, etc.

• Output Signals:

  • Analog Output (AO): Proportional voltage level to gas concentration

  • Digital Output (DO): Threshold-based gas detection signal (adjustable via potentiometer)

• Sensitivity Adjustment: Onboard potentiometer for setting gas concentration threshold

• Fast Response Time: Rapid detection of gas concentration changes

• Onboard LED Indicators: Power and digital output status indicators

• Long Life & Stable Performance: Durable sensor element for extended use

• Compatible With: Arduino, ESP32, Raspberry Pi, and various embedded systems

Applications:

• Gas Leakage Detection Systems (LPG, Methane, Hydrogen)

• Smoke Alarms & Fire Safety Devices

• Air Quality Monitoring Solutions

• IoT-Based Environmental Sensing Systems

• Industrial Safety Monitoring

• Smart Home Automation Projects

• Educational DIY Electronics Kits

Package Includes:

• 1 x MQ2 Gas Sensor Module

Why Choose the MQ2 Gas Sensor Module?

• Wide detection range covering multiple combustible gases and smoke.

• Dual analog and digital outputs for flexible interfacing.

• Easy integration with popular development platforms for rapid prototyping.

• Cost-effective solution for air quality and safety monitoring projects.

• Adjustable sensitivity for custom application tuning.