annunciator
/əˈnʌnsiˌeɪtər/
noun
- A device that gives a visual or audible signal, such as a bell, light, or display, often used in buildings or control panels to indicate a condition or message.
- The fire alarm annunciator panel indicated the location of the smoke detector.
- The old hotel still had a mechanical annunciator in the lobby to call the bellhop.
- The elevator annunciator lit up to show which floor the car was on.
- A person who announces something, especially a public speaker or broadcaster.
- She worked as an annunciator for the local radio station.
- The annunciator's clear voice carried across the crowded hall.
- The annunciator at the train station announced the delayed departures.