According to NFPA 72, how must the ANSI evacuation signal be configured?

The ANSI evacuation signal must be configured to be synchronized within a notification zone to ensure that occupants can clearly identify the sound and understand that an emergency situation is present. Synchronization helps to provide a coherent auditory signal, reducing confusion and improving response times during an emergency evacuation. When signals are synchronized, the consistency of the sound across a designated area reinforces the urgency of the alert and helps occupants to recognize the need to evacuate promptly and orderly.

This standard emphasizes the importance of clarity in emergency notifications, and synchronized signals contribute to a well-coordinated alarm system, ultimately enhancing safety in an emergency scenario. Factors such as delay or non-uniformity in sound can lead to misunderstandings about the seriousness of the situation, potentially jeopardizing the safety of the occupants.