annunciator
Alert display board
An annunciator is a device that signals or indicates a condition, typically through lights, sounds, or displays.
In buildings, annunciator panels show which zone triggered a fire alarm.
In older telephone systems, annunciators indicated incoming calls.
The term appears in technical contexts—aviation, industrial controls, security systems—wherever operators need visual or audible alerts about system status.
Hollow resonating instrument
- buzzerElectric signaling device
- chimeMelodic bell sound
- gongStruck metal disc
- hornPointed animal headgear
siren · klaxon · strobe · beacon · speaker · intercom · pager · sounder
Urgent warning signal
- warningAlert about danger
- notificationFormal notice given
- signalMessage-conveying cue
- callContact by phone
summons · page · bulletin · advisory · emergency · evacuation · fault · trouble
Sign revealing status
- displayPresentation for viewing
- boardFlat rigid panel
- switchboardTelephone routing panel
- dashboardVehicle control panel
LED · lamp · light · monitor · readout · gauge · dial · meter
bell
Hollow resonating instrument
horn · siren · klaxon · strobe · beacon · speaker · intercom · pager · sounder · ringer
alarm
Urgent warning signal
- warningAlert about danger
- notificationFormal notice given
- signalMessage-conveying cue
call · summons · page · bulletin · advisory · emergency · evacuation · fault · trouble · tamper
indicator
Sign revealing status
- displayPresentation for viewing
- boardFlat rigid panel
- switchboardTelephone routing panel
dashboard · LED · lamp · light · monitor · readout · gauge · dial · meter · console
proclaimer
One who announces publicly
forerunner · precursor · voice · broadcaster · caller · indicator · signaler · informer · notifier
annunciatorsensor
Input-detecting device
detector · transducer · input device · probe · transmitter
- The AnnunciationAngel's pregnancy announcement to Mary
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