MQ-7 Carbon Monoxide (CO) Sensor

MQ-7 Carbon Monoxide (CO) Gas Sensor Module

The MQ-7 utilizes a cyclic high-low temperature heating method to detect carbon monoxide with exceptional specificity. It heats at 5.0V to clean the sensor, then switches to 1.4V to measure CO absorption, preventing false alarms from moisture or other gases.

Specifications

• Target Gas: Carbon Monoxide (CO)
• Detection Range: 20 to 2000 ppm CO
• Operating Cycles: 60s @ 5.0V (cleaning), 90s @ 1.4V (measurement)
• Dual Outputs: Analog voltage (proportional to ppm) and Digital threshold
• High Sensitivity and Rapid Response time (< 150s)
• Essential safety sensor for gas water heaters, garages, and furnaces