What is the primary purpose of visible notification appliances in a building?

The primary purpose of visible notification appliances in a building is to inform occupants of a fire alarm. These appliances, which include strobes and flashing lights, are critical for alerting individuals to emergencies, especially in environments where the sound of audible alarms may not be heard due to noise levels or occupants having hearing impairments.

Visible notification devices serve to ensure that everyone in the building, regardless of their ability to hear, can receive immediate alerts in the event of a fire or other emergency situations. This capability is essential for the safety and evacuation of all occupants and plays a crucial role in fire safety systems.

While aesthetics may play a role in the overall design of a building, and enhancing security can be vital in different contexts, their primary function is linked directly to emergency notification and occupant safety, thus making them indispensable in fire alarm systems.