Historical
ANSI/ASA S3.41-2015
Audible Emergency Evacuation (E2) and Evacuation Signals with Relocation Instructions (ESRI)
This Standard specifies the characteristics of acoustic signals to be used for audible emergency evacuation (E2) and audible evacuation signals with relocation instructions (ESRI). It applies to the audible signal only and not to the signaling system components or equipment. The use of these signals either as the only audible means of signaling or as a part of a voice message is subject to the requirements of governing laws, codes or other standards.
Content Provider
Acoustical Society of America [asa]