Which of the following signals takes highest priority?

Signal priorities determine the order in which events are processed and displayed by the fire alarm system.

NFPA 72 (2022), Annex A.10.14.3 and system programming guidelines:

While not directly listed in a table, systems are programmed such that:

Alarm (including pre-alarm)has the highest priority

Followed bysupervisory, thentrouble, and finallyrestoral

Pre-alarm is part ofalarm initiation logicand is treated as high-priority due to its potential escalation.

Correct answer: A. Pre-alarm

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