Carbon Monoxide Sensor - MQ-7

Product Overview

This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.

This sensor has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

This sensor comes in a package similar to our MQ-3 alcohol sensor, and can be used with the breakout board below.

Documents:

• Hazardous Gas Monitor
• [Datasheet](https://cdn.sparkfun.com/datasheets/Sensors/Biometric/MQ-7 Ver1.3 - Manual.pdf)
• Wiring Example