The device that indicates where an alarm originated on a fire alarm system is the annunciator.

The device that indicates where an alarm originated on a fire alarm system is the annunciator.

• A. Annunciator
• B. Control panel
• C. Panel indicator
• D. Alarm log

Answer: (A)

Knowing where an alarm originated is shown by the annunciator. An annunciator is a display connected to the fire alarm control panel that lights up or marks the exact zone, floor, or detector that activated the alarm, giving responders a quick, at-a-glance indication of where the problem started. This rapid localization is its main purpose, making it easier to direct resources and verification to the correct area. The control panel is the central brain of the system and will indicate that an alarm has occurred, but it doesn’t always present the location in a readily interpretable way for immediate response. Panel indicators on the main unit may show general status, but they don’t provide the dedicated, zone-by-zone localization that an annunciator offers. The alarm log records events for later review, not real-time location of the origin.

Knowing where an alarm originated is shown by the annunciator. An annunciator is a display connected to the fire alarm control panel that lights up or marks the exact zone, floor, or detector that activated the alarm, giving responders a quick, at-a-glance indication of where the problem started. This rapid localization is its main purpose, making it easier to direct resources and verification to the correct area. The control panel is the central brain of the system and will indicate that an alarm has occurred, but it doesn’t always present the location in a readily interpretable way for immediate response. Panel indicators on the main unit may show general status, but they don’t provide the dedicated, zone-by-zone localization that an annunciator offers. The alarm log records events for later review, not real-time location of the origin.