Which conditions must be annunciated by visible means when required by other governing laws, codes, or standards?

• A. Fire conditions
• B. Supervisory or trouble conditions
• C. Alarm conditions
• D. System fault conditions

Answer: (B)

When non-fire events could affect the fire protection system’s reliability, codes require that those statuses be shown visually at the fire alarm control panel or annunciator. These are the supervisory and trouble conditions.

A supervisory condition means a monitored device or part of the system isn’t in its normal ready state and needs attention (for example, a sprinkler valve position or a monitored device that must be returned to proper status). A trouble condition signals a fault in the system that could prevent it from operating correctly (such as a power loss, wiring fault, or a device fault).

Visible annunciation ensures building personnel see and can act on these issues promptly, even if no fire is occurring. Alarm conditions, by contrast, are typically communicated with both audible and visible indications to alert occupants of a fire, but the requirement to provide visible annunciation specifically applies to supervisory and trouble signals when mandated by laws or standards.

So, the conditions that must be annunciated by visible means under those requirements are supervisory or trouble conditions.