On an addressable fire alarm system, what indications are typical for an alarming device on the panel?

• A. A red alarm LED or indicator, and the device's address shown on a screen; possibly an audible alert.
• B. A blue fault LED
• C. A green normal LED
• D. The device's address shown on a separate display but no alarm indicator

Answer: (A)

In an addressable fire alarm system, each device has its own address and its status is reported to the panel. When a device enters alarm, the panel clearly marks that event with a red alarm indicator and shows the device’s address on a display, often with an audible alert as well. This combination lets responders know exactly which device tripped and that it’s actively in alarm, not just reporting a fault or normal status.

The blue LED typically signals a fault, not an active alarm. A green LED usually means normal status. Showing only the device’s address on a display without an alarm indication would not convey that an alarm is occurring.