What does the red light on the Halocarbon alarm panel indicate?

The red light on the Halocarbon alarm panel signifies a critical condition. Specifically, it indicates that the levels of Halocarbon present are at a threshold that requires immediate attention for safety reasons. This warning alerts personnel to the fact that the concentration has reached a critical level where it may pose a risk to health and safety, necessitating prompt action to mitigate dangers associated with exposure or to initiate emergency procedures if required.

In contrast, a normal operating condition would not trigger any alarms, and thus would not illuminate the red light. A warning of low levels suggests that there is no immediate danger, but rather a precautionary alert, which typically would be indicated by a different color light. Maintenance needs, while important, would also be indicated differently to ensure that critical alerts remain distinct and recognizable to the people monitoring the system.