Concept · Zone F · Alarm devices
Horns, strobes and the one-way voice system in a shelter
Notification appliances are the parts of a fire alarm that people hear and see: horns, strobes, speakers, bells and gongs. In most shelters the alarm system also includes a one-way voice system, so staff can tell each part of the building what to do. Where an alarm starts is covered under alarm devices; this page is about how it reaches people.
Plan ref F3Updated October 25, 2026
What counts as a notification appliance
The Study Material lists bells, horns, speakers, lights and text displays. Their output can be audible, tactile or visible, or a mix (Source: Study Material §10.10). The flashing lights are called strobes. Common combinations are horn and strobe in one unit, and speaker and strobe in one unit.
In a shelter, the practical question is where those devices sound. The panel uses one of two methods:
- General alarm method: every audio and visual device in the building activates. In some buildings this is the only method available.
- Selective alarm method: devices activate only on some floors, grouped around the floor of alarm. The drawing further down shows which ones.
Selective alarm fits a building where the plan moves only some floors, such as a partial evacuation or an in-building relocation. Those orders are explained on the evacuate or shelter in place page.
Voice terms in the Study Material
- One-way voice communication
- A public address capability that carries announcements from the fire command center, usually in the lobby, to all parts of the building. It is used to warn and instruct occupants in a fire or non-fire emergency (Source: Study Material §2).
- Two-way voice communication
- Both sides can talk. Warden phones near the exit stairways let staff report from the fire floor back to the lobby (Source: Study Material §2).
- Public address system
- Microphone, amplifier and loudspeakers used to address a large public, usually from the lobby. Some shelters have one that is not part of the approved fire alarm system.
- Voice communication capability
- The ability to talk to occupants, by a fire alarm system with one-way or two-way voice, or by other approved means.
Announce and notify: checkpoints
Checkpoint round
0 of 7 checked · 0 cleared
Practice questions written for study, not taken from the test. The real F-80 is a multiple-choice test on a touch-screen computer at FDNY Headquarters.
Read the options first and sort them into building-wide, one floor, or none. Then let the stem choose the group. Devices that start the alarm are on the smoke and heat detectors page.
How the checkpoint round works
Read the options first and rule out the ones that break a rule, then pick from what is left. After you answer, the debrief explains every option and scores your strikes. Keys: 1–5 or A–E answer, Shift with a number rules that option out, the arrow keys move.
Checkpoint 1 of 7
Checkpoint 01
During a test of the one-way voice system, the panel shows normal operation, but staff say announcements are badly muffled in the east wing. What is the MOST appropriate action?
Rule out what you can with the ✕ buttons, then choose. The debrief for every option opens here.
- AMoving people out until a routine inspection leaves a failed system in place for weeks; it needs a repair call now.
- BCorrect: The communication system must work correctly at all times, so record the failure and get the speakers repaired right away.
- CA megaphone can help in the moment, but it is not a replacement for a required part of the alarm system.
- DA panel light only shows the circuit energized; if people cannot understand the message, the system is not working.
Checkpoint 02
During a routine evacuation drill, the shelter’s one-way voice communication system fails completely. What is the coordinator’s MOST appropriate immediate action?
Rule out what you can with the ✕ buttons, then choose. The debrief for every option opens here.
- AThe failure is now a real impairment; finishing the drill first delays the out-of-service steps.
- BCorrect: A failed communication system is out of service, so stop the drill, follow the impairment steps, and set up another way to reach staff and residents.
- CWaiting for a routine visit leaves the system broken; an impairment is reported and repaired right away.
- DCoordinators and maintenance staff may not modify the alarm system; only authorized technicians work inside the panel.
Checkpoint 03
Which of the following public address announcements provides the clearest instruction during a localized emergency, minimizing the risk of panic?
Rule out what you can with the ✕ buttons, then choose. The debrief for every option opens here.
- ACorrect: It names who moves and which stair to use, without guessing; clear, specific direction is what keeps people calm.
- BTelling people to ignore an alarm is never acceptable; any unplanned alarm is treated as a real fire.
- C“Might” and “if you feel unsafe” leave the decision to each resident, which breeds confusion.
- D“Any exit” can send people into a stair filled with smoke, and the whole building is told to leave for a local problem.
Checkpoint 04
After maintenance work on the building’s electrical system, power is restored to the one-way voice communication system. To make sure the system works, the coordinator must:
Rule out what you can with the ✕ buttons, then choose. The debrief for every option opens here.
- ALogging the time power came back says nothing about whether announcements can be heard.
- BA clean display shows no fault signal, but it cannot tell you the speakers carry an understandable voice.
- CCorrect: Only an actual voice test proves people can hear and understand announcements, and the coordinator must keep the system working at all times.
- DThe central station handles alarm signals; telling it the electrical work is done does not check the voice system.
Checkpoint 05
The coordinator must conduct a partial evacuation drill for the third floor. How should the one-way voice communication system be used?
Rule out what you can with the ✕ buttons, then choose. The debrief for every option opens here.
- ABypassing the system throws away the tool built for floor-by-floor announcements.
- BCorrect: A partial drill targets one floor, so select that floor’s zone and speak only to the people who need to move.
- CA pull station starts an alarm; using it to run the drill sends tones and a signal, not a targeted message.
- DAn all-call reaches every floor, which can start people moving who were meant to stay in place.
Checkpoint 06
During a partial evacuation, the coordinator must provide specific instructions to the affected floors. What is the required sequence for using the one-way voice communication system?
Rule out what you can with the ✕ buttons, then choose. The debrief for every option opens here.
- AWaiting out a recorded loop wastes time when floors need specific instructions now.
- BCorrect: Floor-specific directions need a live voice, so take the microphone and talk over the automatic tones as your system allows.
- CDisabling detectors during an emergency removes protection and is a system change coordinators may not make.
- DSilencing the building needs FDNY authorization; a voice announcement does not require it.
Checkpoint 07
A shelter panel uses the selective alarm method. A smoke detector activates on the 4th floor. Where do the horns and strobes activate?
Rule out what you can with the ✕ buttons, then choose. The debrief for every option opens here.
- ASounding every floor is the general alarm method, not the selective one.
- BThe alarm floor alone is too narrow; the selective method also covers the floors directly above and below it.
- CCorrect: the selective method covers the alarm floor plus the floor right above and the floor right below.
- DSelective is not every floor above; it reaches only one floor up and one floor down from the alarm floor.
The same fire, two methods
Speakers, phones and who keeps them working
Can the fire alarm speakers carry a notice about dinner time?
No. Communication systems that are part of the fire alarm system should be used only for fire and drill purposes. For a shelter-wide announcement, the Study Material points to the public address system (Source: Study Material §10.11).
Who keeps the voice system working?
The coordinator must make sure the communication system works correctly at all times (Source: Study Material §10.11). The panel tasks in section 4 include announcements to the whole building, the stairways and individual floors.
Is a one-way voice system the same as warden phones?
No. One-way voice only broadcasts from the fire command center. Warden phones are two-way: staff on a floor can talk back to the lobby.
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