Annunciator -

The corresponding annunciator window flashes, usually in red or amber.

An annunciator is a centralized monitoring system—visual, audible, or both—designed to provide immediate alerts about abnormal conditions, faults, or status changes in industrial processes, electrical systems, or fire safety networks. annunciator

Accepts normally open (NO) or normally closed (NC) dry contact inputs. The corresponding annunciator window flashes, usually in red