🔍 Product Overview

The MQ-7 Sensor Module is designed for detecting carbon monoxide (CO) gas, particularly suited for home safety, industrial monitoring, and portable gas-detection systems. It features both analog and digital output capabilities—ready for integration with microcontrollers for real-time monitoring or alarm functions.

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🚀 Why It’s Ideal for Your Projects

• High sensitivity to CO: The sensor’s material is specifically tuned for carbon monoxide, providing reliable detection across a range of concentrations.

• Flexible outputs for different uses: With an analog output, you can measure varying levels of CO; the onboard digital output lets you trigger alarms or signals when a threshold is exceeded.

• Microcontroller-friendly and affordable: Operates on standard 5 V signals, making it easy to interface with Arduino, ESP32, Raspberry Pi (via ADC) or other development boards — perfect for DIY, hobby, or professional builds.

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📝 Key Features

• Detectable CO concentration range typically spans 10 ppm to 1,000 ppm (depending on module and calibration).

• Dual-output: analog voltage output correlating with gas concentration and digital TTL output when a preset threshold is surpassed.

• Operating voltage around 5 V DC with onboard heater circuit, requiring a warming period for stable operation.

• Sensitivity adjustment via onboard potentiometer to set digital trigger threshold.

• Compact module design with easy-to-connect pins: VCC, GND, analog output (AO) and digital output (DO).

• Suitable for continuous monitoring applications with fast response and recovery under proper conditions.

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🎯 Typical Applications

• Home/garage CO detection – Monitoring living spaces, garages, or enclosed fuel-gas areas for carbon monoxide build-up.

• Industrial safety systems – Use for detecting CO concentrations near motors, combustion equipment, boilers or pipelines.

• Smart IoT monitoring – Connect the sensor to a microcontroller with WiFi or Bluetooth for remote CO monitoring and alerts.

• Educational and hobbyist projects – Ideal for learning about gas sensors, analog/digital interfacing and building safety-aware systems.

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✅ Why You’ll Love It

If you’re building a project where detecting carbon monoxide is critical for safety or monitoring, the MQ-7 module offers a reliable, cost-effective, and easy-to-integrate solution. Its dual-output design, adjustable threshold and compatibility with popular microcontroller platforms mean you can build responsive CO detection systems without complex hardware.