Series SM and DSM Sync Modules
THE CITY OF
NEW YORK
DEPARTMENT OF BUILDINGS
U
L
®
Series SM or DSM
Description
The Wheelock Series SM and DSM Sync Modules are utilized
with the Series AS/AH, Series NS/NS4/NH, Series RSS, Series
RSSP, Series SLM and selected strobe applications with other
Wheelock combination appliances.
When used with Series AS Audible Strobes and/or Series
NS Horn Strobes, the SM and DSM Sync Modules provide
independent operation of synchronized temporal pattern (code
3) horn and synchronized strobe flash, as well as the ability to
silence the horn while maintaining the strobe flash. while using
only a single pair of wires. The sync modules are available in
two versions; the SM-12/24 for control of a Class B NAC circuit;
and a dual output version, the DSM-12/24 for control of either a
Class A or two (2) Class B NAC circuits.
Features
• Approvals include: UL Standard 1971, ULC, New York City
(MEA), California State Fire Marshal (CSFM) and Chicago
(BFP)
• Uniquely designed to accept an independent strobe and
audible input from the FACP and convert to a single output
that connects to Wheelock’s Series AS or Series NS family of
audible strobes
• Series SM and DSM Sync Modules can also be used to
synchronize Wheelock’s Series RSS, RSSP and SLM Sync
Strobes
• 3 ampere per circuit current handling at 12 or 24 VDC
• Low operating current draw
• Compatible with all standard fire alarm control panels
• Meets the NFPA-72 requirement for Temporal Pattern when
used with the Series AS/AH and/or Series NS/NS4/NH
• 3 year warranty
E5946
FIRE ALARM
CONTROL PANEL
(FACP)
151-92-E
7300-0785:132
POWERPATHCP
POWERPATHMP
OR
SM OR DSM
OTHER POWER
BOOSTERS
SM or DSM Connection Diagram with Power Booster
AS/AH, NS, HS4/HS
NH, RSS, RSSP,
E w/STB, ET w/STB,
CH w/STB
APPLIANCES
Table 1: Sync Module (SM) Current Requirements (AMPS) Table2: Sync Module (DSM) Current Requirements (AMPS)
UL
Voltage
8.0 VDC 10.5 VDC 0.017 0.004 0.055 0.004 0.140 0.016 8.0 VDC 10.5 VDC 0.019 0.004 0.055 0.004 0.150 0.016
12.0 VDC 12.0 VDC 0.017 0.004 0.060 0.004 0.160 0.019 12.0 VDC 12.0 VDC 0.020 0.004 0.064 0.004 0.170 0.019
24.0 VDC 24.0 VDC 0.028 0.008 0.070 0.008 0.320 0.030 24.0 VDC 24.0 VDC 0.035 0.008 0.080 0.008 0.342 0.030
33.0 VDC 33.0 VDC 0.038 0.010 0.080 0.010 0.440 0.040 33.0 VDC 33.0 VDC 0.045 0.010 0.090 0.010 0.470 0.040
8.0 VRMS 8.0 VRMS 0.026 0.006 0.085 0.008 0.210 0.016 8.0 VRMS 8.0 VRMS 0.028 0.005 0.107 0.008 0.210 0.016
12.0 VRMS 12.0 VRMS 0.028 0.006 0.090 0.009 0.225 0.019 12.0 VRMS 12.0 VRMS 0.030 0.006 0.103 0.009 0.240 0.019
24.0 VRMS 24.0 VRMS 0.040 0.010 0.120 0.015 0.446 0.033 24.0 VRMS 24.0 VRMS 0.048 0.010 0.145 0.015 0.480 0.033
33.0 VRMS 31.0 VRMS 0.055 0.012 0.150 0.022 0.645 0.056 33.0 VRMS 31.0 VRMS 0.062 0.012 0.175 0.022 0.685 0.056
NOTE: All CAUTIONS and WARNINGS are identified by the symbol . All warnings are printed in bold capital letters.
ULC
Voltage
Rated Average
Current
In1 Audible In1 Audible In1 Audible In1/In2 Audible In1/In2 Audible In1/In2 Audible
Rated Peak
Current
Rated Inrush
Current
UL
Voltage
ULC
Voltage
Rated Average
Current
Rated Peak
Current
Rated Inrush
Current
WARNING: PLEASE READ THESE SPECIFICATIONS AND INSTALLATION INSTRUCTIONS CAREFULLY BEFORE USING, SPECIFYING
OR APPLYING THIS PRODUCT. FAILURE TO COMPLY WITH ANY OF THESE INSTRUCTIONS, CAUTIONS AND WARNINGS COULD RESULT
IN IMPROPER APPLICATION, INSTALLATION AND/OR OPERATION OF THESE PRODUCTS IN AN EMERGENCY SITUATION, WHICH COULD
RESULT IN PROPERTY DAMAGE, AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
WARNING: MAKE SURE THAT THE TOTAL CURRENT REQUIRED BY ALL APPLIANCES THAT ARE CONNECTED TO A SM OR DSM DOES
NOT EXCEED 3.0A OR EXCEED THE RATING OF THE FIRE ALARM CONTROL PANEL’S PRIMARY AND SECONDARY POWER SOURCES AND
NAC CIRCUITS. OVERLOADING THESE SOURCES COULD RESULT IN LOSS OF POWER AND FAILURE TO ALERT OCCUPANTS DURING AN
EMERGENCY, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
When calculating the total current, use Tables 1& 2 to determine the highest value of “Rated Average Current” for the SM or DSM (across the listed voltage range), then add this value to the total current for any other appliances powered by the same source and include any required safety factors. Refer
to Instruction Sheet for addtional information.
WARNING: MAKE SURE THAT ALL FUSES USED ON NAC CIRCUITS ARE RATED TO HANDLE THE MAXIMUM INRUSH OR PEAK CURRENT
FROM ALL APPLIANCES ON THOSE CIRCUITS. FAILURE TO DO THIS MAY RESULT IN LOSS OF POWER TO THE NAC CIRCUIT AND THE
FAILURE OF ALL APPLIANCES ON THAT CIRCUIT TO OPERATE, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR
DEATH TO YOU AND/OR OTHERS.
Table 3: Current Consumption of the SM and DSM Modules
Outpurt Circuit Description of SM/DSM Module
SM
Module
DSM
Module
Ref. Fig.
Class “B” with Audible Silence (single circuit) Y 1
Class “B” with No Audible Silence (single circuit) Y 2
Class “B” with Audible Silence (dual circuit) Y 3
Class “B” with No Audible Silence (dual circuit) Y 4
Class “A” with Audible Silence (single circuit) Y 5
Class “A” with No Audible Silence (single circuit) Y 6
Note: SM Sync Modules are rated for 3.0 amperes at 12/24 VDC; DSM Dual Sync Modules are rated for 3.0 amperes per circuit. The
maximum number of interconnected DSM modules is twenty (20).
CAUTION: Use SM or DSM Sync Modules only on NAC circuits with continuously applied voltage. Do not use SM or DSM Sync
Modules on coded or interrupted NAC circuits in which the applied voltage is cycled on and off.
CAUTION: Power Boosters may be used in conjunction with the SM or DSM Sync Modules only in the order shown below. Only
one SM or DSM Sync Module shall be allowed on a NAC circuit. Do not connect Power Booster to the NAC circuit after the one SM
or DSM Sync Module. Exception: The Wheelock PS-24-8MC Power Booster can be connected either before or after the SM or DSM
Sync Module. Refer to Power Booster instruction manual for proper application and installation.
FIG. 1 SINGLE CLASS “B” CIRCUIT WITH
AUDIBLE SILENCE FEATURE
FIG. 2 SINGLE CLASS “B” CIRCUIT WITH NO AUDIBLE
SILENCE FEATURE
FIG. 3 DUAL CLASS “B” CIRCUIT WITH AUDIBLE
SILENCE FEATURE
FIG. 5 SINGLE CLASS “A” CIRCUIT WITH
AUDIBLE SILENCE FEATURE
Notes
1. Non-Sync Appliances can be installed before or after a SM or DSM. If the Non-Sync appliance requires audible silence, four
wire connection is necessary with the strobe circuit connected before the SM or DSM NAC circuit, and the audible leads
connected to a silenceable NAC circuit from the FACP.
2. The audible appliance produces a momentary interruption (approximately 25ms) each time the strobes flash.
3. Circuit #2 may be omitted if only 1 circuit is required when using the DSM.
4. Non-Sync Audible Appliances can be installed on the audible NAC. Be aware of the current requirement for the SM or DSM
module. See table 3.
FIG. 4 DUAL CLASS “B” CIRCUIT WITH NO AUDIBLE
SILENCE FEATURE
FIG. 6 SINGLE CLASS “A” CIRCUIT WITHOUT AUDIBLE
SILENCE FEATURE
Specifications and Ordering Information
Model
SM-12/24-R 6369 12 0.017 0.023 W
DSM-12/24-R*** 6374 12 0.020 0.026 W
Order
Code
Input
Voltage
VDC
Average
Current
@ 12 or
24 VDC
24 0.028 0.038 W
24 0.035 0.055 W
UL
Max*
Mounting
Options**
R = Red
* RMS current ratings are per UL average RMS method. UL max
current rating is the maximum RMS current within the listed voltage range (16-33v for 24v units). For strobes the UL max current
is usually at the minimum listed voltage (16v for 24v units). For
audibles the max current is usually at the maximum listed voltage
(33v for 24v units). For unfiltered FWR ratings, see installation
instructions.
** Refer to Data sheet # S7000 for Mounting Options.
*** The maximum number of interconnected DSM modules is
twenty (20).
*** The total distance from the first to the last DSM shall not
exceed 1,000 feet of #18 AWG wire. Use only #18 AWG wire.
WARNING: THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE LIMITS OF 8-33 VOLTS USING FILTERED DC OR UNFILTERED
FULL-WAVE RECTIFIED (FWR). DO NOT APPLY 80% AND 110% OF THESE VOLTAGE VALUES FOR SYSTEM OPERATION. THE APPLICATION OF
IMPROPER VOLTAGE MAY RESULT IN DEGRADED OPERATION OR DAMAGE TO THESE PRODUCTS, WHICH COULD RESULT IN PROPERTY
DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
Wheelock products must be used within their published specifications and must be PROPERLY specified, applied, installed, operated,
maintained and operationally tested in accordance with their installation instructions at the time of installation and at least twice a
year or more often and in accordance with local, state and federal codes, regulations and laws. Specification, application, installation,
operation, maintenance and testing must be performed by qualified personnel for proper operation in accordance with all of the latest
National Fire Protection Association (NFPA), Underwriters’ Laboratories (UL), National Electrical Code (NEC), Occupational Safety and
Health Administration (OSHA), local, state, county, province, district, federal and other applicable building and fire standards, guidelines,
regulations, laws and codes including, but not limited to, all appendices and amendments and the requirements of the local authority
having jurisdiction (AHJ).
WARNING: CONTACT WHEELOCK FOR “INSTALLATION INSTRUCTIONS”
(P83123-SM & P83177-DSM) AND “GENERAL INFORMATION” SHEET ON THESE PRODUCTS. These documents do undergo periodic changes.
It is important that you have current information on these products. These materials contain important information that should be read prior to
specifying or installing these products including:
• TOTAL CURRENT REQUIRED BY ALL APPLIANCES CONNECTED TO SYSTEM SECONDARY POWER SOURCES.
• FUSE RATINGS ON NAC CIRCUITS TO HANDLE MAXIMUM INRUSH OR PEAK CURRENTS FROM ALLAPPLIANCES ON THOSE NAC
CIRCUITS.
• COMPOSITE FLASH RATE FROM MULTIPLE STROBES WITHIN A PERSON’S FIELD OF VIEW.
• THE VOLTAGE APPLIED TO THESE PRODUCTS MUST BE WITHIN THEIR RATED IN PUT VOLTAGE RANGE.
• INSTALLATION IN OFFICE AREAS AND OTHER SPECIFICATION AND INSTALLATION ISSUES.
• USE STROBES ONLY ON NAC CIRCUITS WITH CONTINUOUSLY APPLIED OPERATING VOLTAGE. DO NOT USE STROBE ON CODED
OR INTERRUPTED NAC CIRCUITS IN WHICH THE APPLIED VOLTAGE IS CYCLED ON AND OFF AS THE STROBE MAY NOT FLASH.
Architects and Engineers Specifications
The sync modules shall be Wheelock Series SM or DSM Sync Modules. Series SM or DSM Sync Modules shall be the master controllers for Wheelock Series AS/AH, NS/NS4/NH, RSS, RSSP and appliances where a synchronized
audible/visual audible or visual only appliance is specified. All modules shall be UL listed under Standard 464. Series SM and DSM
modules shall be designed to interface with Series AS Audible Strobe Appliances and NS Horn Strobe Appliances to produce a synchronized temporal (Code 3) horn as well as synchronized strobe flash on a two-wire alarm circuit. Other synchronized products are
the Wheelock Series RSS, RSSP, SLM visual only appliances and Series AH and NH Horn Appliances.
SM Sync Module shall incorporate two input NAC circuits for power connection from the Fire Alarm Control Panel; one for the strobe
NAC circuit and one for the audible NAC circuit. DSM modules shall provide an additional strobe circuit input/output for control of either
two Class “B” NAC circuits or a single Class “A” NAC circuit. Upon activation of the audible silence function at the Fire Alarm Control
Panel, the audible signal component of Series AS Audible Strobe
and/or the Series NS Horn Stobe may be silenced while maintaining strobe activation.
Series SM or DSM module shall be designed and available in two versions; the SM-12/24 for control of a single Class B NAC circuit
and a dual output version, the DSM-12/24 for control of either Class A two (2) Class B NAC circuits. The DSM dual circuit version shall
provide the additional capability of “daisy-chaining”, that is, the ability to interconnect multiple DSM’s for synchronous horn and strobe
operation on multiple NAC circuits. Interconnection capability shall be for a maximum of 40 NAC circuits. All modules shall operate
on either 12 or 24 VDC. Rated average current requirement for the SM 12/24 shall be .017 amperes @ 12 VDC and .028 amperes @
24 VDC. The DSM 12/24 shall be .020 amperes @ 12 VDC and .035 amperes @ 24 VDC. A single circuit SM Sync Module shall be
capable of handing a 3 ampere load at 12 or 24 VDC and the dual circuit DSM Sync Module shall be capable of handling a load of 3
amperes per NAC circuit at 12 or 24 VDC.
All versions shall be polarized for DC supervision and shall incorporate screw terminals for in/out field wiring of #18 to #12 AWG wire
size. The SM and DSM Sync modules shall mount to a 4-11/16” x 2-1/8” deep backbox.
NOTE: Due to continuous development of our products, specifications and offerings are subject to change without notice in
accordance with Wheelock Inc. standard terms and conditions.
273 Branchport Avenue
Long Branch, NJ 07740
Phone: (800) 631-2148
Fax: (732) 222-2588
WE ENCOURAGE AND SUPPORT NICET CERTIFICATION
3 YEAR WARRANTY
www.cooperwheelock.com
S3000 SM/DSM 06/06
Made in USA
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