What is the function of an annunciation device in an intrusion detection system?

The function of an annunciation device in an intrusion detection system primarily revolves around notifying occupants of a potential threat. These devices are designed to alert individuals on-site to take necessary action when an alarm is triggered. For example, if a security breach is detected, the annunciation device may produce sounds, visual signals, or both to ensure that people in the vicinity are aware of the situation. This immediate notification is crucial for both personal safety and for enabling a swift response to mitigate any potential security risks.

While some annunciation devices may facilitate communication with monitoring centers or activate sirens, their primary role focuses on directly alerting individuals present in the area. This characteristic distinguishes them from other potential responses initiated by the broader security system, where the emphasis lies elsewhere.