A fire alarm system in which detectors report alarms using digital communications protocols in a signaling line circuit is called an addressable fire alarm system.

A fire alarm system in which detectors report alarms using digital communications protocols in a signaling line circuit is called an addressable fire alarm system.

• A. Hybrid
• B. Addressable
• C. Conventional
• D. None

Answer: (B)

Detectors that report alarms through digital communications on a signaling line circuit have their own unique addresses, allowing the control panel to identify exactly which device triggered the alarm and monitor its status. This capability is what defines an addressable fire alarm system. In contrast, conventional systems group detectors into zones and the panel only knows that a zone alarm occurred, not which specific detector fired or the device health. A hybrid system combines conventional and addressable components, so not all devices are individually identifiable. The description given fits an addressable system because it emphasizes digital communication and individual device addressing.

Detectors that report alarms through digital communications on a signaling line circuit have their own unique addresses, allowing the control panel to identify exactly which device triggered the alarm and monitor its status. This capability is what defines an addressable fire alarm system.

In contrast, conventional systems group detectors into zones and the panel only knows that a zone alarm occurred, not which specific detector fired or the device health. A hybrid system combines conventional and addressable components, so not all devices are individually identifiable. The description given fits an addressable system because it emphasizes digital communication and individual device addressing.