Which of the following is NOT typically considered a major component found in a fire alarm control panel?

• A. Tamper switch
• B. Power supply and battery backup
• C. Control electronics
• D. Annunciator

Answer: (A)

The key idea is to distinguish between the essential, active parts that make a fire alarm control panel detect and report fires, and auxiliary features that mainly provide security or status information. A fire alarm control panel relies on power supply with battery backup to keep the system energized during outages, control electronics to process detector inputs and coordinate outputs, and an annunciator to display status and alert occupants or responders. The tamper switch, on the other hand, is primarily a security feature that detects if the cabinet is opened or tampered with. It doesn’t participate in detecting a fire or signaling a response under normal operation, so it isn’t considered a major functional component of the panel.