• ID: mq7
• Name: MQ7 Carbon Monoxide Sensor
• Category: gaseous
• Manufacturer: dfrobot
• Connection: analog
• Link: https://www.dfrobot.com/wiki/index.php/Carbon_Monoxide_Gas_Sensor(MQ7)_(SKU:SEN0132)

The Grove MQ7 Gas Sensor module is useful for detecting Carbon Monoxide (CO) concentrations in the air. It has a detection range of 20-2000 ppm.
For optimum use, it requires calibration after a pre-heat time of 48 hours. See the datasheet for details.