Which two functions are fire alarm control functions?

• A. Door release and intercom
• B. Elevator recall and fan shutdown
• C. Smoke detection and audible alert
• D. Power supply and battery charging

Answer: (B)

When thinking about fire alarm control functions, focus on the automatic actions the system takes to manage life safety during a fire. Elevator recall and fan shutdown are classic examples: the fire alarm system recalls elevators to a safe floor and prevents their use, reducing the risk to occupants, while it also shuts down HVAC/fans to limit smoke spread and improve conditions for evacuation and firefighting.

The other options relate to supporting features or components rather than automatic control actions. Door release and intercom deal with access and communication, not active life-safety control of building systems. Smoke detection and audible alert cover sensing and notification, not the corrective actions the system performs. Power supply and battery charging are about keeping the system powered, not fire-related control functions.