The 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. 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. Specification * Power supply: 5V Documents * MQ7 datasheet * Wiring sample Shipping List * Carbon Monoxide Sensor (MQ7) x1 https://elecena.pl/product/22714490/carbon-monoxide-sensor-mq7-discontinued 2023-03-06 https://elecena.pl/product/22714490/carbon-monoxide-sensor-mq7-discontinued 2024-09-19