An annunciator the term for a control room mechanism to bring attention to a problem. It normally takes the form of lights or sounds and a specific message and probably part of a display with many other similar alarms.
See also
wikipedia:Annunciator panel
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Ampacity, Amphenol connector, Annunciator, Arc chute, Autotransformer, Busbar, Bushing, Concentrator, Condulet, Contactor, Controlotron, Doble, Exciter, Float charge, Guided Wave Radar, Intercell connection resistance, Limit switch, Megger, Molded case circuit breaker, Motor-Generator Set, Overload relay, Pomona jack, Potentiometer, Rectifier, Ripple voltage, Shunt, Specific gravity, Stator, Time-domain reflectometer |