A U D I B L E / V I S I B L E
N O T I F I C A T I O N
SpectrAlert
®
Dual Strobe
Notification Appliances
Models Available
White Housing
DS2475WAR
Red Housing
DS2475RAR
DS2475WAR
DS2475RAR
Accessories
White Housing
BBS-DSW
Red Housing
BBS-DSR
Product Overview
Two visible signals for multiple applica-
tions from one device
Meets unique applications where
combinations of amber and red lens
colors are required
Strobes may be powered over a two or
four wire circuit
75 candela output per UL 1638
Low current draw
Mounts to single gang and four square
back boxes
Field-reversible strobes for left- or right-
mounting
Multiple labeling options included
System Sensor’s SpectrAlert Dual Strobe notification appliance is designed to
accommodate unique signaling applications where two stage notification is required.
Flexibility.
The SpectrAlert Dual Strobe line incorporates two visible notification
appliances, to accommodate those applications where a two stage alarm system
or two distinct visible signals are required. Available in white or red housings
and a variety of colored lens options, SpectrAlert Dual Strobes allow a user to
customize visible notification for both fire and non-fire applications including
pre-action alarms, security, tornado alert, evacuation, etc.
Performance.
Based upon the principles of the original SpectrAlert wall mount
strobes, the Dual Strobe models operate at 24 volts, and provide 75 candela out-
put per UL 1638. The strobes may either be powered in tandem over a two wire
circuit or independently over a four wire circuit.
Installation.
Like all SpectrAlerts, the Dual Strobes offer installation ease and
flexibility. These models are typically mounted to a single gang back box.
Using the mounting bracket provided, four square back box mounting is also
accommodated.
Customization.
SpectrAlert Dual Strobes provide the flexibility to customize the
product in the field. If desired, the strobe modules can be field-reversed, for left
or right-mounting of each colored strobe. Multiple labeling options are provid-
ed, including FIRE, ALERT, EVAC and EVACUATE, to designate the
specific function for each strobe.
Engineering Specification
Dual strobe shall be a System Sensor SpectrAlert model ________ listed to UL 1638 for fire protective signaling systems. Strobes
shall have an operating temperature between 32°F and 120°F. Strobes shall have the option of being powered over a two or
four wire circuit. When powered over two wires, strobes shall be activated by reversing the circuit’s polarity. When powered
over four wires, the factory installed jumpers must be removed. Strobes shall operate at 24VDC, with a UL range rating of 20
to 30VDC. Actual operating voltage must be between 16 and 33 VDC. Strobes shall be available in a lens color combination of
amber and red and shall have a minimum light output of 75 candela. Strobes shall be UL 1638 listed.
Specifications
Input Terminals
12 to 18 AWG
Operating Voltages
24VDC and FWR unfiltered
Operating Temperature Range
32°F - 120°F (0°C - 49°C)
Operating Voltage Range
20-30V
UL tests functional integrity to -20% to +10% of
manufacturer’s stated ranges
Dimensions
5” x 7
1
/
2
” x 2
1
/
2
”
(12.7cm x 19 cm x 6.4 cm)
Weight
1
1
/
4
lbs. (0.6 kg)
Mounting Options
4” x 4” x 1
1
/
2
” back box,
2” x 4” x 1
7
/
8
” single gang box,
Direct wall mount
Current Draw Per Strobe
Average Current (mA) 24V Models
20V
DC
169
FWR
220
DC
140
24V
FWR
191
DC
115
30V
FWR
174
DC
460
Peak Current (mA) 24V Models
20V
FWR
560
DC
450
24V
FWR
570
DC
420
30V
FWR
620
DC
190
In Rush Current (mA) 24V Models
20V
FWR
230
DC
220
24V
FWR
290
DC
290
30V
FWR
370
SpectrAlert Dual Strobe Ordering Information
White Housing Model
DS2475WAR
BBS-DSW
Red Housing Model
DS2475RAR
BBS-DSR
Description
Amber/Red lenses
Sur face mount back box skir t
Voltage
24
Candela
75
System Sensor Sales and Service
System Sensor Headquarters
3825 Ohio Avenue
St. Charles, IL 60174
Ph: 800/SENSOR2
Fx: 630/377-6495
Documents-on-Demand
800/736-7672 x3
www.systemsensor.com
System Sensor Canada
Ph: 905.812.0767
Fx: 905.812.0771
System Sensor Europe
Ph: 44.1403.276500
Fx: 44.1403.276501
System Sensor in China
Ph: 86.29.524.6253
Fx: 86.29.524.6259
System Sensor in Singapore
Ph: 65.6273.2230
Fx: 65.6273.2610
System Sensor – Far East
Ph: 85.22.191.9003
Fx: 85.22.736.6580
System Sensor – Australia
Ph: 613.54.281.142
Fx: 613.54.281.172
System Sensor – India
Ph: 91.124.637.1770 x.2700
Fx: 91.124.637.3118
© 2002 System Sensor. The company reserves the right to change product specifications without notice.
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