The MQ-7 Carbon Monoxide (CO) Gas Sensor Module is a high-precision sensor designed for detecting carbon monoxide in the air, making it ideal for home safety, industrial monitoring, and robotics projects. Using a sensitive tin dioxide (SnO2) semiconductor, the sensor can detect CO concentrations ranging from 20 to 2000 ppm, providing reliable readings in real-time.

The module provides both analog and digital outputs, allowing seamless integration with popular platforms such as Arduino, Raspberry Pi, ESP32, AVR, PIC, and 8051 microcontrollers. Its digital output can trigger alarms or automation systems when a CO threshold is crossed, while the analog output allows for precise monitoring and logging.

Operating on a 5V DC supply, the MQ-7 sensor is easy to interface with microcontroller-based projects. It features fast response times and an adjustable load resistance via onboard potentiometer to calibrate sensitivity. This makes it suitable for gas leakage alarms, environmental monitoring, robotics safety systems, IoT air quality devices, and research experiments.

Compact, durable, and cost-effective, the MQ-7 CO gas sensor is a reliable component for both hobbyist and professional electronics projects, providing safety and monitoring capabilities in a variety of environments.