Cut Sheet

Page 2 of 6 D A T A S H E E T S85001-0341
Not to be used for installation purposes. Issue 6.1
Installation and
Mounting
All models fit to a standard flush
mounted, North-American two-
gang electrical box, 2¾ inch (69
mm) minimum. Optional flush
trims are not required. For surface
mount, use Edwards Signal-
ing’s custom indoor and outdoor
surface boxes painted in color-
matched red or white epoxy. Ed-
wards recommends that fire alarm
horn/strobes always be installed in
accordance with the latest recog-
nized edition of national and local
fire alarm codes.
Application
NOTE: The installation of visible and audible signals are subject to national and local standards, codes, and ordinances.
Consult your Authority Having Jurisdiction for device installation requirements, application standards, and minimum performance specifications.
Horns
During installation, the horn is configured for steady or temporal
tone signal and either low (94 dBA) or high (98 dBA) output. When
temporal output is selected all horns on a common two-wire
circuit are self-synchronized (see specifications). External control
modules are not required for audible synchronization.
Suggested sound pressure level for each signaling zone used with
alert or alarm signals is at least 15dB above the average ambi-
ent sound level, or 5dB above the maximum sound level having a
duration of at least 60 seconds, whichever is greater, measured
5’ (1.5m) above the floor. The average ambient sound level is the
RMS, A-weighted sound pressure measured over a 24-hour period.
Doubling the distance from the signal to the ear will theoretically result
in a 6 dB reduction of the received sound pressure level. The actual
effect depends on the acoustic properties of materials in the space. A 3
dBA difference represents a barely noticeable change in volume.
Typical Sound Output Distribution
dBA measured at 10 ft in anechoic chamber
2400 Series Temporal Horn (‘HIGH’ output)
Strobes
Edwards strobes are UL 1971-listed for use indoors as wall-mounted
public-mode notification appliances for the hearing impaired. Prevail-
ing codes require strobes to be used where ambient noise conditions
exceed specified levels, where occupants use hearing protection,
and in areas of public accommodation. Consult with your Authority
Having Jurisdiction for details.
As part of the Enhanced Integrity line of products, 2400 Series
strobes exceed UL synchronization requirements (within 10 mil-
liseconds other over a two-hour period) when used with a syn-
chronization source. Synchronization is important in order to avoid
epileptic sensitivity.
Integrity strobes are fully compatible with Edwards Genesis sig-
nals.
NOTE: The flash intensity of some visible signals may not be adequate
to alert or waken occupants in the protected area. Research indicates
that the intensity of strobe needed to awaken 90% of sleeping persons
is approximately 100 cd. Edwards recommends that strobes in sleeping
rooms be rated at at least 110 cd.
WARNING: These devices will not operate without electrical power. As
fires frequently cause power interruptions, further safeguards such as
backup power supplies may be required.