A complete fire alarm system includes which components?

• A. Initiation, notification, and control
• B. Detection, signaling, and suppression
• C. Power supply, wiring, and devices
• D. Monitoring, testing, and maintenance

Answer: (A)

Fire alarm systems are built around three essential functions that work together: initiation, control, and notification. Initiation devices detect a potential fire—for example, smoke or heat detectors and manual pull stations. The control component, typically the fire alarm control panel, receives these signals, assesses them, and decides to activate the alarm. Finally, notification devices—sirens, bells, and strobe lights—carry the alert to occupants so they can evacuate.

This combination captures the sensing, the decision-making, and the alerting roles of a complete system. Infrastructure like power supplies and wiring is necessary to support the system, but they aren’t the core functional blocks. Suppression relates to firefighting measures, not the alarm signaling itself. Monitoring, testing, and maintenance describe activities to keep the system healthy, not its components. So the best answer is initiation, notification, and control.