NFPA 72 code sections · Devices & Signal Flow: How the Panel Hears and Speaks
Remote annunciator: the panel telling responders where to go
An annunciator is a display the panel drives at the location the AHJ approves — usually the fire department entrance — so arriving responders see which device or zone is in alarm, supervisory or trouble without walking to the panel. The panel sends it the same information it shows on its own display, in plain language that identifies the location, and the annunciator may also carry the alarm silence and reset controls where permitted. Its purpose is to shorten the time between arrival and finding the fire.
NFPA 72 reference
Chapter 10 — Fundamentals
10.18 Annunciation and Annunciation Zoning (10.18.1 location approved by the AHJ; 10.18.2 annunciation of the condition and its location; 10.18.3 zoning for responder identification)
References use NFPA 72 2019/2022 numbering — section numbers can shift between editions, so confirm in the edition your AHJ has adopted.
On the job, step by step
- A heat detector alarms in the fourth-floor mechanical room.
- The panel declares the alarm and updates the remote annunciator in the main lobby: '4TH FLR MECH ROOM HEAT — ALARM'.
- The engine company reads the annunciator on the way in and goes straight to the fourth floor instead of searching.
- After the fire is out, the officer uses the annunciator's reset key — the panel resets and both displays return to normal.
Quick check
1. The annunciator is located:
2. The panel sends the annunciator:
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