Which fire alarm signal refers to an issue that requires attention but is not an emergency?

The supervisory signal is designed to indicate a condition that requires attention but does not escalate to the level of an emergency. This type of signal typically relates to issues such as a malfunctioning component in the fire alarm system, a supervisory circuit being breached, or maintenance needs that could potentially impact the overall effectiveness of the fire protection system.

Such signals ensure that operators are aware of non-emergency conditions that may warrant further investigation or corrective measures, helping to maintain the system's reliability and readiness for a genuine emergency. Unlike an alarm signal, which indicates an active fire condition, or a fault signal, which points to a malfunction within the system, the supervisory signal serves a specific purpose focused on oversight and proactive management rather than immediate crisis response.

The alert signal, while possibly indicating a need for awareness, often does not specify the supervisory nature of the issue at hand and can be used for communicating various non-emergency messages, but it lacks the specific technical implications of the supervisory signal.