The reporting device in a burglar alarm system is also known as which term?

• A. Alarm indicating device
• B. Sensing device
• C. Control unit
• D. Power supply

Answer: (A)

The reporting device is the part that communicates the alarm condition to occupants (and often to a monitoring service) by producing audible or visual signals. This is best described as the alarm indicating device, because its primary role is to indicate that an alarm has been triggered. It is distinct from the sensing device, which detects the intrusion; the control unit, which processes signals; and the power supply, which provides energy. Sensing devices detect events, control units interpret them and coordinate responses, and the power supply simply powers the system; none of these inherently “report” an alarm the way an alarm indicating device does.