What is the purpose of a manual pull station?

• A. To provide power backup
• B. To supervise circuit integrity
• C. To automatically detect smoke
• D. To enable occupants to manually initiate an alarm from a protected area

Answer: (D)

The main idea here is that a manual pull station gives people inside a protected area a simple, deliberate way to start the fire alarm. When someone pulls the handle, it sends a signal to the fire alarm control panel, which then activates alarms and notifies occupants to evacuate. This is a human-initiated action, distinct from automatic detection like smoke detectors, which trigger alarms on their own when they sense smoke. It’s also not about power backup (which ensures the system stays powered during outages) or circuit supervision (which monitors that wiring and devices are connected and functioning). So the purpose of a manual pull station is to allow occupants to manually initiate an alarm from within the protected area.