APPLICABLE STANDARD
NFPA-72 available from National Fire Protection Association, Quincey
Mass. I also recommend the National Fire Alarm Code Handbood also
published by NFPA - it is more user-friendly.
REQUIREMENTS
output: 85dBA of 10 ft (3m)
temporal pattern: triple burst as follows
0.5s ON
0.5s OFF
0.5s ON
0.5s OFF
0.5s ON
1.5s OFF
{repeat]
NFPA-72 has more detail regarding chimes, light- and tactile signals
for hearing impaired and interaction of signals from other alarms in
the building. There are also requirements for connection to a control
panel, tamper etc. which apply to a complete alarm system.
David Sterner
Alarm Device Manufacturing Co.
______________________________ Reply Separator
_________________________________
Subject: Smoke Alarms
Author: "Ralph Cameron" <SMTP:ral...@igs.net> at ADEMCONET
List-Post: emc-pstc@listserv.ieee.org
Date: 5/31/2000 3:41 PM
Not sure if this is apprpriate for this group.
Can anyone tell me what the audible requirements are for standard approved
smoke
alarms?
Is there a spec for them ?
Mny seniors have difficulty hearing a high pitched tone and I am attempting
to
determine alternatives.
Thanks
Ralph Cameron
EMC Consultant for Suppression of Consumer Electronics
(After sale)
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