The MQ-7 Carbon Monoxide Gas Sensor Module senses dangerous carbon monoxide (CO) gas, the odourless killer produced by heaters and engines. It provides an analog output proportional to CO concentration and a digital alarm output driven by the on-board LM393 comparator, making it ideal for safety alarm builds.
Key Features
- Detects carbon monoxide (CO) for home and workshop safety
- Analog (AO) and digital (DO) outputs on a single board
- Adjustable alarm threshold via on-board potentiometer
- LM393 comparator with power and trigger LEDs
- Works with Arduino, ESP32, ESP8266 and Raspberry Pi
Specifications
| Sensor | MQ-7 (SnO2 carbon monoxide) |
| Working voltage | 5V DC |
| Target gas | Carbon monoxide (CO) |
| Output | Analog (AO) + Digital (DO) |
| Detection range | ~20 β 2000 ppm |
Popular Project Ideas
- Home carbon monoxide alarm
- Garage and generator exhaust monitor
- Air-quality safety station
- IoT CO alert with buzzer and notifications
In stock at Arduino Corner, Rawalpindi with quick delivery to Islamabad and all over Pakistan. Ideal for STEM students, robotics clubs and FYP teams β pay by cash on delivery or online.
