What is the device that originates the alarm signal called?

• A. Fire alarm control panel
• B. Auxiliary device
• C. Initiating device
• D. Notification appliance

Answer: (C)

Initiating devices are the elements in a fire alarm system that originate the alarm signal. They detect conditions such as smoke, heat, or flames, or are manually activated by a person (like a pull station). When an initiating device is activated, it sends a signal to the fire alarm control panel, which then triggers the rest of the system, including the notification appliances that warn occupants. The fire alarm control panel is the central brain that processes inputs and controls outputs, not the source of the alarm itself. Auxiliary devices provide support functions but don’t start alarms, and the notification appliances are the audible/visual devices that alert people once the alarm is underway.