MQ7 Carbon Monoxide Gas Sensor Module

The MQ7 Carbon Monoxide Gas Sensor Module is a high-precision sensor designed to detect CO gas concentrations in the air with impressive sensitivity and quick response time. Ideal for embedded IoT projects, industrial safety systems, and Arduino-based gas detection setups, this module uses a sensitive MQ7 gas sensor and built-in comparator circuitry to output digital and analog signals.

Equipped with a high-quality electrochemical sensing element, the MQ7 sensor module can detect CO gas levels in the range of 20 to 2000 ppm, making it suitable for air quality monitoring, indoor pollution detection, and smart safety devices. The onboard potentiometer allows easy threshold adjustment for digital output, while the analog pin gives you real-time gas concentration data, perfect for interfacing with Arduino, Raspberry Pi, or any other microcontroller platforms.

Thanks to its compact PCB design and low power consumption, the MQ7 module is also well-suited for battery-powered devices and compact enclosures. Its dual signal output (analog & digital) makes it versatile for both hobbyist and professional projects.

✅ Key Features:

• Detection Gas: Carbon Monoxide (CO)

• Operating Voltage: 5V DC

• Detecting Range: 20 – 2000 ppm

• Dual Output: Analog (AO) and Digital (DO)

• Preheat Time: 60 seconds minimum

• Adjustable sensitivity via onboard potentiometer

• Compact and easy to integrate with Arduino, ESP32, STM32, and other development boards

🔍 Applications:

• Smart air quality monitors

• Industrial safety systems

• CO leak detectors for homes and factories

• Smart home automation and alert systems

• STEM learning kits and school electronics projects in Johar Town, Lahore and beyond

📦 Why Buy from ElectroWay?

At ElectroWay, we offer only quality-tested sensors and modules for electronics enthusiasts, professionals, and educational institutions. Whether you’re building a CO detector or working on a smart safety device, this sensor is part of our extensive collection of Gas Sensors and IoT modules—perfect for innovation and hands-on learning.

📽️ Learn How It Works:

Watch this helpful YouTube video tutorial to understand how to interface the MQ7 sensor with Arduino and build your own CO detection system.