In an addressable system, how does the panel know which device triggered an alarm?

In an addressable system, how does the panel know which device triggered an alarm?

• A. Each device has a unique address and reports its status on the signaling line circuit to the panel
• B. The panel uses time stamps to identify devices
• C. The panel polls devices on a separate bus
• D. Each device reports its status by zone

Answer: (A)

Unique device addressing is how an addressable fire alarm panel identifies the source of an alarm. Each device gets its own programmable address. When a device detects an alarm, it sends a digital message over the signaling line circuit that includes its address and the event. The panel decodes that address and immediately knows exactly which device triggered the alarm, enabling precise annunciation, logging, and targeted response. This is why addressable systems can pinpoint the exact device rather than just indicating a general area. Time stamps don’t by themselves locate the source, and polling on a separate bus describes a different communication approach. Reporting by zone only identifies a location, not the specific device that fired.

Unique device addressing is how an addressable fire alarm panel identifies the source of an alarm. Each device gets its own programmable address. When a device detects an alarm, it sends a digital message over the signaling line circuit that includes its address and the event. The panel decodes that address and immediately knows exactly which device triggered the alarm, enabling precise annunciation, logging, and targeted response. This is why addressable systems can pinpoint the exact device rather than just indicating a general area.

Time stamps don’t by themselves locate the source, and polling on a separate bus describes a different communication approach. Reporting by zone only identifies a location, not the specific device that fired.