A certified carbon monoxide sensor with exceptional measurement precision. It is able to detect even slightly increased amounts of carbon monoxide, which are enough to affect your wellbeing over time. With higher concentrations, the FIBARO CO Sensor will immediately inform you about a threat. Carbon monoxide is an invisible, odorless gas. This makes it particularly dangerous for people and animals alike. The sensor will even work without being connected to the system, so it can continuously monitor the home.