Public Operating Mode refers to what type of signaling?

• A. A remote access protocol for alarm panels.
• B. A maintenance shutdown procedure.
• C. Audible or visible signaling to occupants of the protected area.
• D. A mode for public broadcast messaging.

Answer: (C)

Public Operating Mode is about how the alarm system communicates with people inside the protected space. In this mode, the system provides audible or visible alerts—like sirens, bells, horns, and strobe lights—so occupants are aware of the alarm and can evacuate or take action. This is all about notifying those present, not about remote access, maintenance procedures, or external messaging. The other choices describe functions unrelated to occupant-facing signaling, such as panel access, shutdown steps, or general public broadcasts.