What is the purpose of an Annunciator?

An annunciator serves a crucial role in providing real-time status information about various circuits or conditions within a system. It is designed to alert operators and personnel to specific statuses, such as whether a system is functioning correctly or if there are any faults or issues that need attention. This immediate feedback is essential for maintaining safety and operational efficiency, especially in an emergency response context like that of the FDNY.

Additionally, while other options may appear relevant in specific scenarios, they do not encapsulate the primary function of an annunciator. For instance, it does not actively provide visual alarms during emergencies, summarize safety protocols, or serve as a backup power source. Instead, its main job is to effectively communicate vital system alerts, promoting rapid awareness and response to any changes in operational status. This is why option C is the most accurate representation of an annunciator's purpose.