Fire Alarm Systems | SM/DSM Synchronization Modules
SM/DSM Synchronization Modules
▶ Synchronization modules for 12 VDC or 24 VDC Class A
and Class B alarm circuits
▶ Independent control of audible alarm while maintaining
visual alarm on Class B or Class A NAC
▶ Converts two independent inputs, strobe and audible,
into a single notification appliance output
▶ Conforms with ADA guidelines for strobes and audible
temporal (Code 3) output
▶ Control panel supervises synchronization module(s)
The Cooper Wheelock SM‑12/24‑R and DSM‑12/24‑R
Synchronization Modules are used in notification appliance
circuits (NACs) to control synchronization of audible and
visual devices. They synchronize strobes at one flash per
second. Audible devices are brought into compliance with
NFPA 72, temporal sound pattern (Code 3).
Both the SM (single) and DSM (dual) modules can
independently operate audible notification appliances
while maintaining the visual alarm condition required in
some jurisdictions.
Connect the DSM modules to provide temporal (Code 3)
horn and strobe synchronization with multiple circuits.
They provide a cost-effective means to upgrade existing
circuits to ADA compliance.
The synchronization modules operate on notification
appliance circuits with continuously applied voltage.
Functions
Certifications and Approvals
Cooper Wheelock, Inc. holds these Listings and Approvals:
Region
Certification
USA
UL
ULSZ: Audible Signal Appliances (UL464),
UUKC: Signaling Appliances and
Equipment for Hearing Impaired (UL1971)
CSFM
7300-0785: 132, 7300-1615: 131
Synchronization
These devices are an effective means of synchronizing both
audible and strobe circuits.
Audible devices controlled by these modules provide a
synchronized temporal (Code 3) output. The Code 3 pattern
produced by all horns on that circuit is synchronized and
the temporal pattern effect mandated by NFPA 72 (July,
1996) is clearly recognizable.
CBFP
City of Chicago Bureau of Fire Protection
NYC/MEA
151‑92‑E, Vol. 15
FCC
Complies with Federal Communications
Commission FCC Part 15, Class B
Synchronizing strobes can eliminate possible restrictions
on the number of strobes in the field of view. This is an easy
way to comply with Americans with Disabilities Act (ADA)
recommendations concerning persons with photosensitive
epilepsy.
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2 | SM/DSM Synchronization Modules
Installation/Configuration Notes
DSM Power Requirements
Compatible Products
Current (maximum) at 8 V to 33 V
These synchronization modules are manufactured by
Wheelock, Inc. They are compatible with all Bosch fire alarm
control panels (FACPs). For a list of compatible NAC
devices, refer to Synchronization Module Compatibility
Technical Service Note (P/N: F01U001225).
Audible:
VDC: 10 mA; VFWR: 12 mA
Line:
VDC: 45 mA; VFWR: 62 mA
Mounting Considerations
These synchronization modules surface mount on standard
four‑inch back boxes.
Wiring
Voltage (input)
Nominal:
24 VDC
Range:
8 VDC or VFWR to 33 VDC or VFWR
Ordering Information
The input terminals accept wires with diameters between
18 AWG (1.2 mm) and 12 AWG (2.3 mm).
SM‑12/24‑R Single Synchronization
Module (red)
A 12/24 VDC Cooper Wheelock module that
synchronizes notification appliances on
Class B alarm circuits.
SM-12/24-R
Parts Included
DSM‑12/24‑R Dual Synchronization Module
(red)
A 12/24 VDC Cooper Wheelock module that
synchronizes notification appliances on a single Class A or two Class B circuits.
DSM-12/24-R
Quant.
Component
1
Synchronization module
1
Hardware pack
1
Literature pack
Technical Specifications
Environmental Considerations
Relative Humidity:
Up to 93 ± 2%, non‑condensing
Temperature (Operating):
+32°F to +120°F (0°C to +49°C)
Mechanical Properties
Dimensions (H x W x D):
5 in. x 5 in. x 0.3125 in.
(12.7 cm x 12.7 cm x 0.8 cm)
Material:
Molded plastic enclosure
SM Power Requirements
Current (maximum) at 8 V to 33 V
Audible:
VDC: 10 mA; VFWR: 12 mA
Line:
VDC: 38 mA; VFWR: 55 mA
Voltage (input)
Nominal:
12 VDC or 24 VDC
Range:
8 VDC or VFWR to 33 VDC or VFWR
Americas:
Bosch Security Systems, Inc.
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: +1 800 289 0096
Fax: +1 585 223 9180
security.sales@us.bosch.com
www.boschsecurity.us
Europe, Middle East, Africa:
Bosch Security Systems B.V.
P.O. Box 80002
5600 JB Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: +31 40 2577 330
emea.securitysystems@bosch.com
www.boschsecurity.com
© Bosch Security Systems Inc. 2010 | Data subject to change without notice
T1295000459 | Cur: en-US, V7, 4 Jul 2010
Asia-Pacific:
Represented by
Robert Bosch (SEA) Pte Ltd, Security Systems
11 Bishan Street 21
Singapore 573943
Phone: +65 6258 5511
Fax: +65 6571 2698
apr.securitysystems@bosch.com
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