Features

Audible/visible (A/V) notification appliances with

efficient electronic horn and high output xenon
strobe, available for wall or ceiling mount
Operation is compatible with ADA requirements (refer
to important installation information on page 3)
Rugged, high impact, flame retardant thermoplastic
housings are available in red or white with clear lens
Operates over a two-wire SmartSync circuit to
provide:
Horns that are controlled separately from strobes on the
same two-wire circuit
On-until-silenced and on-until-reset operation on
the same two-wire pair
SmartSync horn activation of Temporal pattern, March
Time pattern (at 60 BPM), or on continuously
Strobe appliances on the same circuit operating at a
synchronized 1 Hz flash rate
Class B (Style Y) operation requires connection to a
compatible SmartSync NAC or to SmartSync Control
Module (SCM) 4905-9938
Class A (Style Z) operation when connected to the
4905-9938 SCM or with 4100U series fire alarm control
panel NACs
Wall mount A/Vs features:
Wiring terminals are accessible from the front of the
housing providing easy access for installation,
inspection, and testing
Covers are available separately to convert housing color
Optional adapters and wire guards:
Wall mount A/V adapters are available to cover surface
mounted electrical boxes and to adapt to Simplex

2975-9145 boxes
UL listed red wire guards are available for wall or
ceiling mount A/Vs
Visible notification appliance (strobe):
24 VDC xenon strobe; intensity is selectable as 15, 30,
75, or 110 candela with visible selection jumper secured
behind strobe housing
UL listed to Standard 1971
Regulated circuit design ensures consistent flash output
and provides controlled inrush current
Audible notification appliance (horn):
Low current, 24 VDC electronic horn with harmonically
rich sound output suitable for either steady or coded
operation (Temporal or 60 BPM March Time pattern)
UL listed to Standard 464

Wall and Ceiling Mount A/Vs
Description

Multi-Candela TrueAlert A/Vs with horn and
synchronized strobe provide convenient installation
to standard electrical boxes. The enclosure designs are
both impact and vandal resistant and provide a convenient
strobe intensity selection. Since each model can be
selected for strobe intensity output, on-site model
inventory is minimized and changes encountered during
construction can be easily accommodated.
Wall mount A/V housings are a one-piece assembly
(including lens) that mounts to a single or double gang, or
4 square standard electrical box. The cover can be
quickly removed (a tool is required) and covers are
available separately for color conversion.
Ceiling mount A/Vs install using standard 4 electrical
boxes. Color choice is determined by model number.
Strobe Intensity Selection

During installation, a selection plug at the back of the
housing determines the desired strobe intensity. An
attached flag with black letters on a highly visible yellow
background allows the selected intensity to be seen at the
side of the strobe lens.
* This product has been approved by the California State Fire Marshal (CSFM) pursuant to
Section 13144.1 of the California Health and Safety Code. See CSFMListing
7125-0026:317 for allowable values and/or conditions concerning material presented in this
document. It is subject to re-examination, revision, and possible cancellation. Accepted for
use City of New York Department of Buildings MEA35-93E. Refer to page 2 for listing
status of wire guards. Additional listings may be applicable; contact your local Simplex
product supplier for the latest status. Listings and approvals under Simplex Time Recorder
Co. are the property of Tyco Safety Products Westminster.
** Simplex multi-candela SmartSync two-wire horn/strobe appliance operation is protected
under one or more of the following U.S. Patent Numbers: 5,559,492; 5,622,427;
5,865,527; 5,886,620; 6,281,789; 6,954,137; 7,005,971; and 7,006,003.

TrueAlert

Multi-Candela Notification Appliances

UL, ULC, CSFM Listed; FM Approved; SmartSync Operation Audible/Visible Notification
MEA (NYC) Acceptance* with Horn and Synchronized Flash, Non-Addressable
S4906-0002-3 6/2006



Strobe Application Selection

Proper selection of visible notification is dependent on
occupancy, location, local codes, and proper applications
of: the National Fire Alarm Code (NFPA 72), ANSI
A117.1; the appropriate model building code: BOCA,
ICBO, or SBCCI; and the application guidelines of the
Americans with Disabilities Act (ADA).
Synchronized Strobes

Multiple Strobes. When multiple strobes and their
reflections can be seen from one location, synchronized
flashes reduce the probability of photo-sensitive reactions
as well as the annoyance and possible distraction of
random flashing. The multi-candela strobes of these A/Vs
are synchronized by the controlling SmartSync operation
NAC.

SmartSync Two-Wire Control

SmartSync operation mode allows a two-wire circuit to
provide the ability to activate both the horn and strobe on
the same NAC and then allow the horn to be silenced
while the strobe remains flashing. The horn operates as
on-until-silenced while the strobe operation is
on-until-reset.

SmartSync Control Sources

4006, 4008, 4100U, and 4010 Fire Alarm Control
Panels (refer to individual product data sheets for more
information)
4009 IDNet NAC Extender (refer to data sheet
S4009-0002)
SmartSync Control Module (SCM) 4905-9938 (refer to
data sheet S4905-0003)
Additional SmartSync compatible notification
appliances include separate horns and combination
horn/strobe notification appliances.
2 S4906-0002-3 6/2006
Multi-Candela A/Vs
Model Mounting Housing Color FIRE Lettering Description
4906-9127 Red White
4906-9129
Wall
White Red
4906-9128 Red White
4906-9130
Ceiling
White Red
Horn with Multi-Candela Strobe; strobe intensity selectable as:
15, 30, 75, or 110 candela; operates with SmartSync two-wire
control
Wall Mount A/V Adapters
Model Description Dimensions
4905-9937 Red
4905-9940 White
Surface Mount Adapter Skirt; use to cover 1-1/2 (38 mm) deep
surface mounted boxes
5-3/8 H x 5-1/4 W x 1-5/8 D
(136 mm x 133 mm x 41 mm)
depth with strobe =4-3/8 (111 mm)
4905-9931
Red Adapter Plate for mounting to Simplex 2975-9145 box (typically for
retrofit, may be mounted vertical or horizontal)
8-5/16 x 5-3/4 x 0.060 Thick
(211 mm x 146 mm x 1.5 mm)
2975-9145 Red Mounting Box, requires Adapter Plate 4905-9931
7-7/8" x 5-1/8" x 2-3/4" D
(200 mm x 130 mm x 70 mm)
SmartSync Control Module
Model Description Dimensions
4905-9938
SmartSync Control Module with Class B or Class A output; mounts in 4
(102 mm) square box; refer to data sheet S4905-0003 for details
4 x 4-1/8 x 1-1/4 D
(102 mm x 105 mm x 32 mm)
Replacement Covers for Wall Mount A/Vs
Model Description Dimensions
4905-9994 Red cover with white FIRE lettering
4905-9995 White cover with red FIRE lettering
5-1/8 H x 5 W x 1-1/2 D
(130 mm x 127 mm x 38 mm)
Wire Guards and Ceiling Mount A/V Adapter
Model Description Dimensions
4905-9961*
Wall mount red wire guard with mounting plate, compatible with semi-flush
or surface mounted boxes
6-1/16 H x 6-1/16 W x 3-1/8 D
(154 mm x 154 mm x 79 mm)
4905-9927* Red Wire Guard for mounting to flush mounted electrical box
8-1/2 x 6-1/8 x 3
(216 mm x 156 mm x 76 mm)
4905-9928*
Red Adapter Plate, required to mount guard to surface
mounted electrical box
9 x 7
(229 mm x 178 mm)
4905-9915 White
4905-9916
Ceiling
Mount
Red
Surface Mount Adapter Box Extension, use to cover
1-1/2 deep surface mounted boxes
4-3/4" x 6-7/8" x 1-1/2" deep,
(121 mm x 175 mm x 38 mm)
* UL listed by Space Age Electronics Inc.
Product Selection


3 S4906-0002-3 6/2006
Wall Mount or Ceiling Mount, Common Specifications
UL Listed Rating Regulated 24 DC; see Note 1 below
Rated Voltage Range
ULC Listed Rating 20 VDC to 30 VDC per ULC S526-M878
Flash Rate and Synchronized NAC Loading 1 Hz; with up to 35 synchronized strobes maximum per NAC
Environmental; Temperature and Humidity 32 to 122 F (0 to 50 C); 10% to 93%, non-condensing at 100 F (38 C)
Connections
Terminal blocks for 18 AWG to 12 AWG (0.82 mm
2
to 3.31 mm
2
) ; two wires per
terminal for in/out wiring
Horn Output Characteristics 2400 to 3700 Hz sweep, modulated at 120 Hz rate
Voltage 16 VDC 24 VDC 33 VDC
Sound Type (see Note 2) Steady Coded Steady Coded Steady Coded
UL 464 Reverberant Chamber 86 dBA 82 dBA 88 dBA 84 dBA 90 dBA 86 dBA
Horn Output
Ratings
@ 10 ft (3 m)
(see Note 2)
Anechoic Chamber 92 dBA 91 dBA 94 dBA 95 dBA 96 dBA 96 dBA
Housing Dimensions (with lens) 5-1/8 H x 5 W x 2-3/4 D (130 mm x 127 mm x 70 mm)
15 cd 30 cd 75 cd 110 cd
Maximum RMS Current Rating per
Strobe Setting (see Note 3 below)
75 mA 116 mA 221 mA 285 mA
18 VDC 70 mA 101 mA 184 mA 243 mA
Wall
Mount
Reference RMS Currents
at other voltages
24 VDC 60 mA 84 mA 143 mA 185 mA
Housing Dimensions (with lens) 4-3/4 L x 6-7/8 W x 2-5/8 D (121 mm x 175 mm x 67 mm)
15 cd 30 cd 75 cd 110 cd Maximum RMS Current Rating per
Strobe Setting (see Note 3 below)
86 mA 132 mA 250 mA 320 mA
18 VDC 81 mA 119 mA 216 mA 283 mA
Ceiling
Mount
Reference RMS Currents
at other voltages
24 VDC 70 mA 97 mA 167 mA 217 mA
NOTES:
1. Regulated 24 DC refers to the voltage range of 16 to 33 VDC per UL Standard 1971, Signaling Devices for the Hearing Impaired,
changes effective May 1, 2004. This voltage range is the absolute operating range. Operation outside of this range may cause
permanent damage to the appliance. Please note that 16 VDC is the lowest operating voltage that is allowed at the last appliance on the
NAC under worst case conditions.
2. Coded values are typical of the output measured with a Temporal coded or a March Time coded pulse and with a sound level meter
reading on a fast setting. Under the same test conditions, coded horn output peak sound level readings are typically 4 dBA higher.
Anechoic horn output ratings are typically more representative of actual installed sound output.
3. Currents are with horn on steady. The maximum RMS current listed is the device nameplate rating. Strobe designs are constant wattage
and the maximum RMS current rating occurs at the lowest allowable operating voltage. (RMS is root mean square and refers to the
effective value of a varying current waveform.)
Removable cover
(tool required)
Mounting is compatible with
single gang, double gang, and
4" (102 mm) square boxes,
1-1/2" (38 mm) deep, by others
2
1
3
4
Mounting Holes:
4" square (4)
Single gang (2)
Double gang (3)
Wiring access hole
Wiring terminals for
SmartSync operation
Transparent housing
and lens assembly
Strobe intensity
viewing slot
Intensity selection
plug, accessible only
from rear of housing;
factory setting is 15 cd
110
75
30
15

a
NFPA 72 requires
that the entire lens
be not less than
80" and not greater
than 96" above the
finished floor
Electrical
box outline
80" (2.03 m)
minimum
Bottom of lens
is either even
with, or slightly
above bottom
of compatible
boxes
IMPORTANT! WALL MOUNT
INSTALLATION HEIGHT REFERENCE

Installation Reference, Surface or Semi-Flush Mounting
A/V Specifications





Tyco Safety Products Westminster Westminster, MA 01441-0001 USA S4906-0002-3 6/2006
www.tycosafetyproducts-usa-wm.com
2006 Tyco Safety Products Westminster. All rights reserved. All specifications and other information shown were current as of document revision date and are subject to change without notice.

Tyco, Simplex, the Simplex logo, IDNet, TrueAlert, and SmartSync are trademarks of Tyco International AG or its affiliates in the U.S. and/or other countries. NFPA 72 and
National Fire Alarm Code are registered trademarks of the National Fire Protection Association (NFPA).
Surface Mounting Reference
with Optional Adapter Skirt
and Optional Wire Guard
2975-9145 Box
4905-9931 Adapter Plate
4905-9961 Optional Wire Guard
(shown here for reference only,
can be used on other mounting options)
4905-9931 Adapter Plate
4" (102 mm) square
box profile, 1-1/2"
(38 mm) deep
Surface mount conduit and
box shown for reference
A/V
Optional
4905-9961
Wire Guard
Optional Surface Mount Adapter Skirt,
1-1/2" deep: 4905-9937, Red;
4905-9940, White (conduit knockouts
are provided on all four sides)


1
1
0
7
5
3
0
1
5
4" (102 mm) square box,
1-1/2" (38 mm) minimum depth
Optional 4905-9915/-9916 Adapter,
recommended for surface mounted box
Wiring terminals are
located behind the housing
Ceiling reference,
surface mounted box
Ceiling reference,
flush mounted box
Strobe intensity viewing slot
Intensity selection plug,
accessible only from rear of lens
housing; factory setting is 15 cd
Optional 4905-9928 Adapter Plate,
required for surface mounted electrical box
Optional 4905-9927
Red Wire Guard
Four mounting clamps included, two each side
End View

Wall Mount Installation Reference; Adapter Plate, Guard, and Adapter Skirt
Ceiling Mount A/V and Guard Installation Reference