In a fire alarm system, what is the detector's primary function?

In a fire alarm system, what is the detector's primary function?

• A. Detects
• B. Notifies
• C. Suppresses
• D. Controls power

Answer: (A)

The detector’s job is to sense indicators of a fire (such as smoke, heat, or other combustion byproducts) and convert that into an electrical signal that triggers the fire alarm system. It acts as the initiating device that starts the alarm sequence by informing the fire alarm control panel. From there, occupants are alerted through audible/visible notification devices, and responders are notified. The detector itself does not directly notify, extinguish, or control power; those functions are handled by the control panel, notification appliances, suppression systems, or power controls as part of the overall system.

The detector’s job is to sense indicators of a fire (such as smoke, heat, or other combustion byproducts) and convert that into an electrical signal that triggers the fire alarm system. It acts as the initiating device that starts the alarm sequence by informing the fire alarm control panel. From there, occupants are alerted through audible/visible notification devices, and responders are notified. The detector itself does not directly notify, extinguish, or control power; those functions are handled by the control panel, notification appliances, suppression systems, or power controls as part of the overall system.