What type of signal should be produced from an operational pull station?

An operational pull station is designed to manually initiate a fire alarm signal when an emergency is detected. When the pull station is activated, it sends an immediate signal to the fire alarm control panel, which then generates an alarm signal throughout the building. This signal is crucial for alerting occupants to evacuate and for notifying emergency services of a potential fire situation.

In this context, the correct answer indicates that the signal produced from an operational pull station should be an alarm signal. This is because the primary function of activating the pull station is to indicate a fire emergency that requires immediate attention.

Other types of signals, such as trouble, normal, or maintenance signals, relate to different systems or statuses within fire alarm systems but do not correspond to an emergency activation. A trouble signal may indicate issues within the system that need addressing, a normal signal indicates that the system is operating without issues, and a maintenance signal might suggest that routine checks or repairs are needed. These signals do not represent the urgent need for evacuation and response that an alarm signal does. Thus, understanding that the pull station's role is to trigger an alarm is essential for effectively managing fire safety systems.