annunciator


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annunciator

[ə′nən·sē·ād·ər]
(engineering)
A signaling apparatus which operates electromagnetically and serves to indicate visually, or visually and audibly, whether a current is flowing, has flowed, or has changed direction of flow in one or more circuits.

annunciator

1. A signaling device, usually electrically operated, that emits an audible signal and/or a visual indication under selected circumstances; for example, it may sound an alarm in the case of fire or unauthorized entry.

annunciator

annunciatorclick for a larger image
Indicator flag in a gyrocompass that alternates between a dot and a cross and does not settle on either when AC (alternating current) supply is on. If the compass drifts, then either the dot or the cross will be visible, and the compass will not annunciate.
References in periodicals archive ?
It will also fly a LOC or ILS approach to the FAF and then disconnect--push the annunciator to continue on the heading bug (or the Century's ancient analog steering) or disconnect the autopilot and hand fly the rest of the way in.
Tenders are invited for work of providing & fixing of Wireless annunciator for ICTs & Line at 220KV Tembhurni Substation under jurisdiction of Trans O & M Division, Solapur.
Limited Tenders are invited for 1)8 Window Alarm Annunciator As Per Sg12213 Ann-A, It-01.
Limited Tenders are invited for Purchase Of 220V Dc 8 Windows, Led Based & Micro Controller Based Annunciator With The Window
Salco Industries of Pensacola, Florida, has introduced the Door Monitor Annunciator System CS-2000, which monitors and displays the real-time status of up to 80 doors in a compact modular rack design.
Note:Previous Suppliers To Icf/Rcf Or Icf Approved Sources Of Attendant Annunciator Shall Only Be Considered.
8220;ASE has long been committed to developing world class communication products including ASE2000, Bell 202 Modems, 'SPT' Protocol Translators, and 'SAM' Substation Alarm Annunciators.
The units also include four annunciators (gross, net, pounds and kilograms) and decimal point indication.
DSI also offers door alarms, annunciators, pushbuttons, key switches, and mantrap systems.
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.