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
Ceiling Mount Series
Strobes and Horn/Strobes
Models Available
Strobe Models
White
SC2415W
SC241575W
SC2430W
SC2475W
SC2495W
SC24115W
SC24177W
Horn/Strobe Models
White
PC2415W
PC241575W
PC2430W
PC2475W
PC2495W
PC24115W
PC24177W
SC241575W
Standard Application
Red
SC2415
SC241575
SC2430
SC2475
SC2495
SC24115
SC24177
Red
PC2415
PC241575
PC2430
PC2475
PC2495
PC24115
PC24177
PC2475W
Auxiliar y Form C Relay
BBSCW
Accessory Mounting Plates
White
Red
BBSCW
BBSC
Product Overview
Lower current draw
Available in 15, 15/75, 30, 75, 95, 115,
and 177 candela
Horn/strobe models include a three
position switch for field-selecting horn
tones:
- Electromechanical/3KHz
- Temporal/Non-temporal
- High/Low dBA output
Ceiling-specific shape, profile, and
aesthetics
Synchronizable with MDL Sync•Circuit
module
Mounts to 4˝× 4˝× 1
1
⁄
2
˝ back box
Round shape offers greater placement
flexibility
™
System Sensor’s SpectrAlert
®
ceiling mount series strobes and horn/strobes offer a
fresh approach to addressing the unique needs for ceiling mount applications.
Technology.
Like the original SpectrAlert, the SpectrAlert ceiling mount series
offer significant current draw reductions over other ceiling mount strobes and
horn/strobes.
Installation.
SpectrAlert’s compact design also offers installation savings. The
strobe and horn/strobe models mount to a 4˝×4˝×1
1
⁄
2
˝ back box, and take up
little room in the back box, making connections easier. And with SpectrAlert’s
round shape, it is not necessary to align the back box with the room’s walls.
SpectrAlert always lines up.
Flexibility.
SpectrAlert ceiling mount strobes and horn/strobes are available in
seven different candelas, including 177 candela for sleeping areas. The horn/
strobe’s tones are field-selectable through the use of a three position switch
located on the back of the unit. Selections include electromechanical
and 3 KHz tones, temporal and non-temporal patterns, and high and
low volume.
Aesthetics.
SpectrAlert ceiling strobes and horn/strobes offer a design that is sensi-
tive to the aesthetic demands of ceiling mount applications. The round shape main-
tains a low profile appearance, similar to that of a smoke detector and provides
clearly visible “FIRE” identification from all angles.
S5512
S4011
7125-1209:201
7135-1209:204
3006566
61-00-E
144-00-E
Engineering Specifications
Strobe
Strobe shall be a System Sensor SpectrAlert Model _________ listed to UL 1971 and be approved for fire protective ser-
vice where ceiling mount strobes are permitted. The strobe shall be wired as a primary signaling notification appliance
and shall flash at 1Hz over the strobe’s entire operating range. The strobe light shall consist of a xenon flash tube and
associated lens/reflector system.
Horn/Strobe Combination
Horn/strobe shall be a System Sensor SpectrAlert Model _________ listed to UL 1971 and UL 464 and be approved
for fire protective service where ceiling mount horn/strobes are permitted. The horn/strobe shall be wired as a primary
signaling notification appliance and shall flash at 1Hz over its entire operating range. The strobe light shall consist of a
xenon flash tube and associated lens/reflector system. The horn shall have two tone options, two audibility options, and
the option to switch between a temporal and a non-temporal continuous pattern. These options shall be selected by a
multi-position switch. Strobes shall be powered independently of the sounder with the removal of factory installed jump-
er wires. The horn on horn/strobe models shall operate on a coded or non-coded power supply.
Note: The strobes must be powered continuously for the horn to operate.
General Specifications
Dimensions
6.8˝ diameter
Mounting
4˝× 4˝× 1
1
/
2
˝ back box or
4˝× 4˝× 2
1
/
8
˝ back box (with skirt)
Indoor Operating Temperature
32° to 120° F (0° to 49°C)
Weight
5.3 oz. (150 grams)
SpectrAlert Mounting Diagrams
/
4 × 4 × 2
1 8
˝
BBSCW
Strobe or Horn/Strobe with Mounting Plate
Strobe or Horn/Strobe with Accessory Back Box Skirt
Electrical Specifications
Operating Voltage
24 VDC and FWR
1
unfiltered
Input Terminals
12 to 18 AWG
Operating Voltage Range
16–33 V
Operating Voltage Range w/Sync•Circuit
Module
2
17-33 V
U.S. Patent Numbers
6,049,446
6,057,778
D424,465
Notes:
1. Full Wave Rectified (FWR) voltage is a non-regulated, time-var ying power source that is used on some power supply and panel outputs.
2. The MDL causes a one-volt voltage drop in the notification appliance circuit.
Table 1-A: SpectrAlert Strobe UL Max. Current Draw (mA RMS)
Strobe
Setting
15
15/75
30
75
95
115
177
16-33V FWR Operating
Current – Strobe
(mA RMS)
68
77
107
197
239
298
399
16-33V DC Operating
Current – Strobe
(mA RMS)
64
78
113
205
274
325
489
Table 1-B: Horn UL Max. Current Draw Measurements (mA RMS)
16-33V (DC)
Temporal
Low
Volume
High
Volume
Non-
Temporal
Low
Volume
High
Volume
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
23
33
53
57
37
32
49
56
16-33V (FWR)
23
23
44
40
29
33
49
58
Table 1-C: 24V DC Horn/Strobe UL Max. Current Draw Measurements (mA RMS)
Temporal
Low Volume
Candela Setting
15
15/75
30
75
95
115
177
Electromechanical
73
89
126
225
272
297
512
3000 Hz
73
89
125
222
270
297
504
High Volume
Electromechanical
76
91
128
222
271
296
501
3000 Hz
78
92
128
222
271
296
496
Low Volume
Electromechanical
75
89
125
219
266
291
491
3000 Hz
75
90
125
219
265
290
493
Non-Temporal
High Volume
Electromechanical
81
96
131
221
269
292
491
3000 Hz
86
98
134
222
270
293
496
Explanation of Published Voltage, Current, and SPL Specifications
In May 2004 Underwriters Laboratories changed standard
UL 1971 to require that operating current measuremments
are made using RMS (root mean square) instead of peak
or average values. RMS measurements more accurately
predict the power consumption of a device since they take
into account the entire current draw profile including surge,
repetitive surge, and peak values. The published RMS cur-
rent is the maximum operating current of that device within
its operating voltage range. This current maximum may or
may not occur at the endpoints of the voltage range.
During May 2004, UL also changed the way they list the
voltage range of a device. All 12V products will be listed
between 8 – 17.5V and all 24V products will be listed
between 16 – 33V. Those devices are considered “regulat-
ed”. Any product that does not operate within these ranges
will be listed as a “special application” with its operating
voltage specified on the device.
Notes
1. urrent draw for strobe-only products is shown in Table 1-A.
C
2
Similarly, UL tests the audibility of devices in accordance
2. 4VDC 2-wire horn/strobe current draw is shown in Table
1-C.
with UL 464 by measuring them across the operating volt-
C
age range to determine the minimum sound pressure level
3. urrent draw for other horn/strobe power supplies can be
calculated by adding the strobe current in Table 1-A to the
produced at any particular setting.
horn current in Table 1-B from the chosen settings.
Horn Sound Measurements (dBA)
Selectable Horn Tones
Temporal
Low Volume
Electromechanical
3000 Hz Interrupted
High Volume
Electromechanical
3000 Hz Interrupted
Non-
Temporal
Low Volume
Electromechanical
3000 Hz Interrupted
High Volume
Electromechanical
3000 Hz Interrupted
16-33V
75
75
80
81
79
79
84
86
SpectrAlert Dimensions
2.2˝
6.8˝
SpectrAlert Ceiling Mount Strobe
2.2˝
6.8˝
SpectrAlert Ceiling Mount Horn/Strobe
Ordering Information
Model No.
SC2415
SC2415W
SC241575
SC241575W
SC2430
SC2430W
SC2475
SC2475W
SC2495
SC2495W
SC24115
SC24115W
SC24177
SC24177W
PC2415
PC2415W
PC241575
Description
Ceiling-mount strobe, 24 volt, 15 candela, red
Ceiling-mount strobe, 24 volt, 15 candela, white
Ceiling-mount strobe, 24 volt, 15/75 candela, red
Ceiling-mount strobe, 24 volt, 15/75 candela, white
Ceiling-mount strobe, 24 volt, 30 candela, red
Ceiling-mount strobe, 24 volt, 30 candela, white
Ceiling-mount strobe, 24 volt, 75 candela, red
Ceiling-mount strobe, 24 volt, 75 candela, white
Ceiling-mount strobe, 24 volt, 95 candela, red
Ceiling-mount strobe, 24 volt, 95 candela, white
Ceiling-mount strobe, 24 volt, 115 candela, red
Ceiling-mount strobe, 24 volt, 115 candela, white
Ceiling-mount strobe, 24 volt, 177 candela, red
Ceiling-mount strobe, 24 volt, 177 candela, white
Ceiling-mount horn/strobe, 24 volt, 15 candela, red
Ceiling-mount horn/strobe, 24 volt, 15 candela, white
Ceiling-mount horn/strobe, 24 volt, 15/75 candela, red
Accessories
MDL
MDLW
BBSC
BBSCW
Sync•Circuit™ Module, red
Sync•Circuit™ Module, white
Surface-mount back box skirt, red
Surface-mount back box skirt, white
PC241575W
PC2430
PC2430W
PC2475
PC2475W
PC2495
PC2495W
PC24115
PC24115W
PC24177
PC24177W
Ceiling-mount horn/strobe, 24 volt, 15/75 candela,
white
Ceiling-mount horn/strobe, 24 volt, 30 candela, red
Ceiling-mount horn/strobe, 24 volt, 30 candela, white
Ceiling-mount horn/strobe, 24 volt, 75 candela, red
Ceiling-mount horn/strobe, 24 volt, 75 candela, white
Ceiling-mount horn/strobe, 24 volt, 95 candela, red
Ceiling-mount horn/strobe, 24 volt, 95 candela, white
Ceiling-mount horn/strobe, 24 volt, 115 candela, red
Ceiling-mount horn/strobe, 24 volt, 115 candela,
white
Ceiling-mount horn/strobe, 24 volt, 177 candela, red
Ceiling-mount horn/strobe, 24 volt, 177 candela,
white
System Sensor Sales and Service
System Sensor Headquarters
3825 Ohio Avenue
St. Charles, IL 60174
Ph: 800/SENSOR2
Fx: 630/377-6495
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: 86.29.8832.0119
Fx: 86.29.8832.5119
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: 91.124.237.1770 x.2700
Fx: 91.124.237.3118
System Sensor – Russia
Ph: 70.95.937.7982
Fx: 70.95.937.7983
A05-1025-008•9/05•#1530
©
2005 System Sensor. The company reserves the right to change product specifications without notice.
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