DFRobot Carbon Monoxide Sensor (MQ7)

The Carbon Monoxide Sensor (MQ7) is a simple-to-use Carbon Monoxide (CO) sensor suitable for sensing CO concentrations in the air. It can detect CO-gas concentrations anywhere from 20 to 2000ppm. The sensor's output is an analog resistance. Simple-to-use Sensor; Can detect CO-gas concentrations anywhere from 20 to 2000ppm; Very Simple Drive Circuit; Power Supply: 5V