In reference to the multiRAE lite SOG, the sensor low alarm limit of CO is:

The low alarm limit for carbon monoxide (CO) on the multiRAE Lite is set at 9 parts per million (ppm). This threshold is significant because it is designed to alert personnel to the presence of CO at a level where health effects may begin to occur, particularly in enclosed or poorly ventilated spaces.

Setting the low alarm at 9 ppm aligns with safety guidelines and stipulations within various regulatory frameworks concerning exposure limits. Carbon monoxide is a colorless, odorless gas that can be harmful or even fatal at higher concentrations, and the low alarm threshold serves as an early warning system for potential hazardous conditions, enabling a prompt response to ensure safety.

Understanding this alarm setting is vital for fire personnel who may encounter CO in their line of work, as it allows them to take appropriate actions to protect themselves and others from exposure.