In a fire alarm system, a defined area within the protected premises that is monitored as a single unit is called a

• A. zone
• B. region
• C. floor
• D. circuit

Answer: (A)

Zone is the term for a defined area within the protected premises that the fire alarm system monitors as a single unit. This setup lets the control panel indicate exactly which area has triggered, aiding fast localization and response. Regions aren’t a standard term in fire alarm practice, a floor is a level not a monitored unit, and a circuit is the wiring path between devices, not the area itself.