MQ-7 Carbon Monoxide Gas Sensor Module (CO Gas Sensor)

The MQ-7 Carbon Monoxide Gas Sensor Module is a semiconductor gas sensor designed to detect carbon monoxide (CO) gas in the air. It provides both analog and digital outputs, making it easy to interface with Arduino, ESP32, STM32, Raspberry Pi, and other embedded platforms. The module features an onboard LM393 comparator with adjustable sensitivity and is widely used in carbon monoxide detection, industrial safety, air quality monitoring, and gas alarm systems.

Key Features -

• High sensitivity to carbon monoxide (CO)

• Dual analog and digital outputs

• Adjustable sensitivity via onboard potentiometer

• Onboard LM393 comparator

• Fast response and recovery time

• Power and status LED indicators

• Easy microcontroller interfacing

• Stable and reliable performance

• Suitable for CO gas detection systems

• Ideal for safety monitoring applications

Specifications -

• Product type - Gas Sensor Module

• Sensor type - Semiconductor Gas Sensor

• Target gas - Carbon Monoxide (CO)

• Operating voltage - 5V DC

• Output type - Analog and Digital

• Comparator IC - LM393

• Sensitivity adjustment - Onboard Potentiometer

• Preheat time - Required for Stable Readings

• Working current - Moderate Due to Internal Heater

• Board type - Carbon Monoxide Gas Sensor Module

Applications -

• Carbon monoxide detection

• CO gas alarm systems

• Industrial safety monitoring

• Air quality monitoring

• Home safety systems

• Arduino and IoT projects

• Environmental monitoring

• Embedded electronics