Edwards Signaling 2452THS Catalog Page
FIRE ALARM EQUIPMENT
Field Programmable
Electronic Horn/Strobe
2452THS
FEATURES
> Synchronized audible &
synchronized visual signal
> Supervised wiring
> Terminals for easy wiring
> Red or white flame resistant
housing
> Strobe available in 15/75, and
110 candela models
> Engineered thermoplastic
housing UL flame rated 94V-0
AGENCY APPROVALS
> UL 1971 Listed
> UL 1638 Listed
> UL 464 Listed
> CSFM Listed
The Edwards 2452THS Series temporal horn/strobe are especially
designed for use with compatible life safety communication and
control equipment to alert occupants of a life safety event. The horn
emits a piercing low frequency sound that is easily heard above
moderate ambient noise levels. The flash from its strobe can be no-
ticed from almost any position in the room, corridor, or large open
space.
Its rugged plastic housing is made from durable and fire retardant,
high impact plastic with a slightly textured surface. Its ingenious
mounting plate firmly holds the device in place with a single screw.
HORN: During installation, the horn is configured for steady or tem-
poral 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. External control modules are not re-
quired for audible synchronization.
STROBE: The strobe exceeds UL synchronization requirements
(within 10 milliseconds over a two-hour period) when used with a
separately installed EG1M Signal Master. Fully compatible with
Genesis signals.
D-04
12-42
Synchronization is important because a small portion of the popula-
tion have a condition which may cause them to become disoriented
from multiple random flashes of light. This strobe minimizes the
risk.
The 2452THS horn/strobe is for use in rest rooms, meeting rooms,
lobbies, hallways, sleeping rooms or work areas intended for use by
the hearing impaired, or any area where a visual alarm signal is re-
quired.
© Copyright 2004 Edwards
FIRE ALARM EQUIPMENT
TECHNICAL INFORMATION
5 1/2"
(140mm)
5 1/2"
(140mm)
Catalog Number 2452THS-15/75-R (red) & 2452-15/75-W (white) 2452THS-110-R (red) & 2452THS-110-W (white)
Light Output (cd)
UL 1638/ULC S526 75 cd 110 cd
UL 1971 15 cd wall 110 cd wall
15 cd ceiling 60 cd ceiling
Mean operating current
1, 2
96mA @ 24VDC 197mA @ 24VDC
115mA @ 20VDC 241mA @ 20VDC
Peak operating current
2
Mean operating current FWR
3
277mA @ 20V DC 402mA @ 20VDC
79mA @ 24VDC 286mA @ 24VDC
97mA @ 20VDC 202mA @ 20VDC
Peak operating current FWR
Stand-alone Synchronization Strobe flash at 1 per second within 200 milliseconds on common circuit
Characteristics
5
3
446mA @ 20VDC 868mA @ 20VDC
Horn pulses at temporal rate within 200 milliseconds on common circuit
Operating Voltage Strobe: 20-24V DC continuous; Horn: 20-31V DC continuous
Horn Output
4
Anechoic: High setting - 104 dBA (peak)/98 dBA (avg); Low setting - 99 dBA (peak)/94 dBA (avg)
Reverberant: High setting - 85 dBA (continuous)/82 dBA (temporal);
Low setting - 82 dBA (continuous)/75 dBA (temporal)
Horn Current High output: 40 mA @ 24V DC; 55mA @ 24 Vrms FWR;
Low output: 20 mA @ 24V DC; 28 mA @ 24 Vrms FWR
Strobe Flash Synchronization Synchronized at one flash per second. External control module necessary to meet
UL 1971 synchronization requirements of 10 milliseconds over a two-hour period
Compatible Synchronization Modules EG1M, EG1M-RM
Flash Tube Enclosure Clear LEXAN with white marking sleeve
Housing Textured, color impregnated engineered plastics - exceeds 94V-O UL flammability rating
Wire Connections Terminals - separate, polarized inputs for Horn & Strobe, #12 AWG (2.5mm2) maximum
INDOOR Operating Environment 32-120°F (0-49°C) ambient temperature, 93% relative humidity @ 40°C
OUTDOOR Operating Environment 98% relative humidity @ 40°C; -35-150°F (-31-66°C) ambient temperature
(must use weatherproof box) (2452THS-15/75 rated at 17.7 cd @ -35°C per UL/@ -40°C per ULC)
(2452THS-110 rated at 70.7 cd @ -35°C per UL/@ -40°C per ULC)
Note 1 - Use the mean current rating to establish the maximum number of strobes, wire gauge and standby power requirements. 2400 Series uses 24V DC. FireShield uses 24V DC FWR.
Note 2 - From a FILTERED DC source. Note 3 - From an UNFILTERED (Full Wave Rectified) DC source. Note 4 - Measurement at 10 ft (3m) @ 24V DC. Subtract 3 dBA for models with
strobes. Note 5 - Temporal audible pattern is defined as: 1/2 sec ON, 1/2 sec OFF, 1/2 sec ON, 1/2 sec OFF, 1/2 sec ON, 1/2 sec OFF, then repeat cycle.
© Copyright 2004 Edwards
5/8"
(16mm)
D-04
12-43
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