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Annunciator means:

  1. One that announces, especially an electrical signaling device used in hotels or offices to indicate the sources of calls on a switchboard.
  2. (General Physics) a device that gives a visual indication as to which of a number of electric circuits has operated, such as an indicator in a hotel showing in which room a bell has been rung
  3. (Railways) a device giving an audible signal indicating the position of a train
  4. (Broadcasting) a less common word for announcer
  5. (Aviation) An annunciator panel, also known in some aircraft as the Centralized Warning Panel (CWP), is a group of lights used as a central indicator of status of equipment or systems in an aircraft, industrial process, building or other installation. Usually, the annunciator panel includes a main warning lamp or audible signal to draw the attention of operating personnel to the annunciator panel for abnormal events or conditions.
  6. (Politics) The Annunciator is the House of Lords' blog. The 'Annunciator TV Screens' are a digital audio-visual intercom system in the House of Commons.
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