CO – carbon monoxide and CO2 – carbon dioxide are often confused. The names sound the same, they both are colorless and odorless gases, and at high concentrations, both can be deadly. The difference is that CO2 is a common, naturally occurring gas required for all plant and animal life. CO is not common.
Do carbon monoxide detectors also detect carbon dioxide?
We are often asked if a carbon monoxide detector will measure carbon dioxide levels, and vice versa. Carbon dioxide detectors use infrared sensors to detect levels of gas in the atmosphere, whereas carbon monoxide detectors primarily use electrochemical sensors as well as gel sensors and metal oxide semiconductors.