The MQ-7 Carbon Monoxide Gas Sensor Module is an electronic gas-sensing component used to detect the presence of carbon monoxide (CO) in the surrounding air. It is a popular building block for hobby electronics, school and college projects, smart-home prototypes, and DIY air-monitoring setups. The module is well suited for makers, students, and engineers who want to add gas detection to an Arduino, Raspberry Pi, ESP32, or similar microcontroller project.
Key features
- Based on the widely used MQ-7 gas sensor element.
- Provides both an analog output and a digital (threshold) output for flexible reading.
- On-board potentiometer to adjust the digital trigger sensitivity.
- Simple pin header for quick wiring on a breadboard or project board.
- Compatible with common 5V microcontroller platforms.
Typical uses
- DIY carbon monoxide detection and alarm prototypes.
- Arduino, ESP32 and Raspberry Pi learning and experimentation.
- Air-quality and gas-monitoring student projects.
- Smart-home and IoT sensor demonstrations.
How to choose / tips
- Confirm your board logic level matches a 5V sensor before wiring.
- Use the analog pin for graded readings and the digital pin for simple on/off alerts.
- Allow the sensor a short warm-up time and calibrate the potentiometer for your environment.
Why tna W rna
At tna W rna we focus on quality components, reliable sourcing, fast delivery across Egypt, and cash on delivery, so you can build and test your projects with confidence.
