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One that announces, especially an electrical signaling device used in hotels or offices to indicate the sources of calls on a switchboard.

an·nun′ci·a·to′ry (-ə-tōr′ē) adj.


1. (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
2. (Railways) a device giving an audible signal indicating the position of a train
3. (Broadcasting) a less common word for announcer


(əˈnʌn siˌeɪ tər)

1. an announcer.
2. a signaling apparatus, esp. in some doorbell systems, that uses lights or pointers to indicate the source of the signal.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.annunciator - an indicator that announces which electrical circuit has been active (as on a telephone switchboard)
indicator - a device for showing the operating condition of some system
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References in periodicals archive ?
Additionally, we applaud Faro for including battery power status annunciators, which flash green when power is strong, flash amber when low and flash red when the batteries are about to quit.
“ASE has long been committed to developing world class communication products including ASE2000, Bell 202 Modems, 'SPT' Protocol Translators, and 'SAM' Substation Alarm Annunciators. We are enthused to be part of the Kalkitech family who, like us, extend the frontiers of communication protocols and solutions for the Smart Grid.
The units also include four annunciators (gross, net, pounds and kilograms) and decimal point indication.
INTRODUCED in the 1950's Alarm Annunciators have become a common sight in many industrial applications around the world and they remain one of the clearest methods of informing plant operators that a process has gone beyond set limits.
DSI also offers door alarms, annunciators, pushbuttons, key switches, and mantrap systems.
Physical and terminal inputs are compatible with previous Altronic (DDNT and DD-NTS-series) annunciators, and Modbus RTU communications are fully supported, Altronic said.
When operators insert the key into a SensEject Switch, it activates a dedicated, key-sensing contact block that can signal alarms or annunciators and detect when a machine operator overrides an interlock.
Applications include telecommunications, switching systems, elevators, automotive instrument panels, annunciators, indicators and use in miniature lighted pushbutton switches.
AN-6100B Series alarm annunciators boast a range of performance features and custom configurations.
CEMStation options include flow limit shut-off valves, pressure relief valves, pressure switches and annunciators for remote alarms and custom distribution panels.