In intrusion detection, which device is described as an annunciator or sounding device?

In intrusion detection, which device is described as an annunciator or sounding device?

• A. Annunciator or sounding device
• B. Video camera
• C. Door sensor
• D. Control panel

Answer: (A)

In intrusion detection, the device described as an annunciator or sounding device is the one that actually produces the alert signals—audible alarms like sirens, bells, horns, or even visual indicators such as strobe lights. Its purpose is to warn occupants and deter the intruder by broadcasting a loud or attention-getting notification when the system is triggered. This distinguishes it from other components: a video camera is for monitoring and recording, a door sensor detects entry or breach, and a control panel is the central unit that processes signals and may activate alarms but is not itself the audible alert device.

In intrusion detection, the device described as an annunciator or sounding device is the one that actually produces the alert signals—audible alarms like sirens, bells, horns, or even visual indicators such as strobe lights. Its purpose is to warn occupants and deter the intruder by broadcasting a loud or attention-getting notification when the system is triggered.

This distinguishes it from other components: a video camera is for monitoring and recording, a door sensor detects entry or breach, and a control panel is the central unit that processes signals and may activate alarms but is not itself the audible alert device.