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NFPA 72: Audible appliance selection for public mode

Thread starter ajitjose
Start date May 9, 2018

Status: Not open for further replies.

May 9, 2018

ajitjose

Electrical

How should we select the audible appliance DB rating?

I got a comment from client that product selection should not be based on Peak an-echoic DB value but based on UL 464 temporal value. I checked many products but could not come across such a thing. All datasheets of the products I checked didn't have any such information. I checked Edwards, MEDC, Notifier but none had it.

What is UL 464 temporal value?

Can anyone help in this regard?

Regards,

Ajit