MQ-7 Gas Sensor Module

The MQ-7 Gas Sensor Module is a reliable and widely used sensor designed to detect Carbon Monoxide (CO) gas in the air. It offers high sensitivity, fast response time, and stable performance, making it ideal for safety, monitoring, and DIY electronics projects. This module is commonly used with Arduino, Raspberry Pi, and other microcontroller platforms.

The MQ-7 works on the principle of change in electrical resistance when exposed to carbon monoxide. It provides both analog and digital output, allowing flexible integration into different applications.

Key Features

• Detects Carbon Monoxide (CO) gas

• High sensitivity and good selectivity

• Fast response and recovery time

• Long life and stable performance

• Adjustable sensitivity using onboard potentiometer

• Analog and Digital output available

• Easy to interface with Arduino, Raspberry Pi, ESP32, etc.

Technical Specifications

• Gas Type: Carbon Monoxide (CO)

• Detection Range: 20 – 2000 ppm

• Operating Voltage: 5V DC

• Heater Voltage: 5V

• Output Type: Analog & Digital

• Preheat Time: ~24 hours (recommended for accurate results)

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

• Operating Humidity: ≤95% RH

Applications

• Carbon monoxide leak detection

• Gas leakage alarms

• Home and industrial safety systems

• Air quality monitoring

• Smart home projects

• IoT and embedded systems

• Educational and DIY electronics projects

Package Includes

• 1 × MQ-7 Gas Sensor Module