INSTALLATION AND MAINTENANCE INSTRUCTIONS
PS12/24ADA Series Strobes with
Mini-sounder for Fire Protective
Signaling Systems
Table 1. PS12/24ADA Series Electrical Ratings
Model
PS24110ADA
PS24110ADAW
PS2475ADA
PS2475ADAW
PS2415ADA
PS2415ADAW
PS1215ADA
PS1215ADAW
PS241575ADA
PS241575ADAW
PS121575ADA
PS121575ADAW
Supply
Voltage
Range
20-30V 225
20-30V 185
20-30V 90
12-17V 182
20-30V 108
12-17V 240
* Horn current is 12mA@12VDC, 15mA@24VDC
Operating Current from Regulated Supply Operating Current from
Average
Operating
Current
Horn/
Strobe*
Average
Operating
Current
Strobe
Only
210
170
75
170
93
225
Current
Peak
Peak
Inrush
Current
(mA)
10.5V/17V
Current
(mA in
access of
Peak)
(mA)
20/30V
470/500 – 0
385/400 – 0
160/180 – 0
– 360/380 0
210/220 – 0
– 510/560 0
Average
Operating
Current
(mArms)
Horn/Strobe*
260
215
105
212
135
285
3825 Ohio Avenue, St. Charles, Illinois 60174
Full-Wave Rectified Unfiltered Supply
Average
Operating
Current
(mArms)
Strobe Only
245
200
90
220
120
270
Peak Current
Peak Current
(mA)
20Vrms/
30Vrms
400/500 –
320/370 –
275/290 –
275/290 –
10.5Vrms/
17Vrms
– 330/380
– 500/530
(mA)
Inrush Current
(Amps in
excess
of Peak)
0.08
0.04
0.02
0.02
1
0.02
A Division of Pittway
1-800-SENSOR2, FAX: 630-377-6495
NOTE: In-rush current du-
ration is less than
20 microseconds
(0.00002 seconds).
NOTICE: This manual should be left with the owner/user
of this equipment.
General Description
The National Fire Protection Association has published
standards and recommended practices for the installation
and use of the above appliances. It is recommended that
the installer be familiar with these requirements, with local
codes, and any special requirements of the local fire
authority having jurisdiction.
The Piezo electronic sounder and signaling strobe are
intended to be connected to the alarm indicating circuit of a
UL-listed fire alarm control panel. Both are compatible with
DC line supervision. The electronic sounder can be
connected to either 12 or 24 VDC panels. Models
PS2415ADA, PS2475ADA, PS24110ADA, and PS241575ADA
require 24 volt panels. Models PS1215ADA and
PS121575ADA require 12 volt panels. Panels may have full-
Figure 1. Vertical and horizontal light distsribution:
wave rectified, unfiltered power supplies. The strobes
produce one flash per second (nominal) with continuous
nominal voltage applied.
The sounder/strobe strobe is rated for 0° to 49° C and is
NOT suitable for outdoor use.
The rated light output of the PS2415ADA, PS1215ADA,
PS241575ADA, and PS121575ADA is 15 cd (See Figure 1).
The rated light output of the PS2475ADA is 75 cd (See
Figure 1).
The rated light output of the PS24110ADA is 110 cd (See
Figure 1).
NOTE: The 15/75 cd strobe has been measured to be 75 cd
@ 0° viewing angle.
Percent of
0˚
45˚
90˚ –90˚
–45˚
LIGHT
Degrees Rating
0 100
5 - 25 90
30 - 45 75
50 55
55 45
60 40
65 35
70 35
75 30
80 30
85 25
90 25
D900-08-00 1 I56-732-04
Greater than 90 dBA measured in anechoic room at 10 feet,
24 volts (see Figure 2 for other voltages); 79 dBA minimum
measured in UL reverberant room @ 12V and 82 dBA @
24V.
Figure 2:
90
89
NOTE: All models can be powered using full wave recti-
fied unfiltered supplies. Under no circumstances
can PS24ADA series devices input voltage exceed
33 VDC or be less than 16 VDC (16-33Vrms for fullwave rectified, unfiltered supplies). Under no circumstances can a PS12ADA series device input
voltage exceed 18.7 VDC or be less than 9.6 VDC
(9.6 - 18.7Vrms for full-wave rectified, unfiltered
supplies).
Installation
A. General:
Phillips head screws are used to attach PS12/24ADA to
semi-flush plate or the electrical outlet box. Slotted head
screws are used to attach semi-flush plate to outlet box.
See Figures 3 and 4 for wiring methods.
NOTE: Do not loop wires under the terminal screw. Wires
connecting the device to the panel must be broken
at the device terminal connection in order to
maintain electrical supervision.
The PS12/24ADA is designed for wall mounting ONLY.
It is intended for mounting to a standard 2-1/2" deep
single gang box which allows sufficient clearance for
conduit entrance.
88
87
dBA output
86
85
84
10 12 14 16 18 20 22
Voltage
All strobes must be mounted so that the top of the lens is
24 inches (61cm) below ceilings or as required by the
authority having jurisdiction.
B. Sounder/Strobe combination mounting:
1. Surface Mount: (See Figure 5)
2. Semi-Flush Mount: (See Figures 6 and 7)
3. Semi-Flush Mount with Plaster Ring or Double Gang
Box: (See Figure 8)
Installation procedures must conform to all applicable codes
and the requirements of the authority having jurisdiction.
NOTE: The rated output of the sounder is specified at 10
feet. It cannot be assumed that the output will
meet the NFPA standard of 15 dB over ambient
noise at all locations within a room. Additional
sounders may be needed to ensure sound output
level complies with NFPA requirements.
Figure 3. Operating horn and strobe in tandem:
From
Control
Panel
or
Next
Device
Previous
Device
Polarity shown in alarm condition. Polarity is reversed in
supervisory condition.
D900-08-00 2 I56-732-04
EOL
A78-2663-00
Figure 4. Operating horn and strobe independently:
To
or
From
Control
Panel
or
Previous
Device
Blk
Red
Cut and
Remove for
Independent
Operation
Note: Remove paper
shield; cut and
remove red and
black wires between
the horn and strobe.
When finished wiring,
place paper shield
back on unit.
Polarity shown in alarm condition. Polarity is reversed in
supervisory condition.
To
Next
Device
A78-2664-00
C
C
D
D
C
C
Screw types used in Figures 5 – 8 below:
A=#6-32x1-1/2" Phillips Oval Head
B=#8-32x5/8" Slotted Pan Head
C=#6-32x5/8" Slotted Pan Head
D=#8 Phillips Oval Head Sheet Metal
Figure 5. Surface mount to single gang box:
A
A
1) Complete Field Wiring (see Figure 3)
2) Screw PS12/24ADA to Outlet Box with A Screws
A78-2602-00
Figure 6. Semi-flush mount to single gang box:
A
A
A78-2604-00
1. Complete Field Wiring (See Figure 3)
2. Screw PS12/24ADA to Outlet Box with A Screws
Figure 7. Semi-flush mount to 4" box:
Figure 8. Semi-flush mount with plaster ring or double
gang box:
B
B
D
D
1. Screw Semi-Flush Plate to 4" Box with B Screws
2. Complete Field Wiring (See Figure 3)
3. Screw PS12/24ADA to Semi-Flush Plate with D Screws
D900-08-00 3 I56-732-04
A78-2603-00
1. Screw Semi-Flush Plate to Box with C Screws
2. Complete Field Wiring (See Figure 3)
A78-2605-00
3. Screw PS12/24ADA to Semi-Flush Plate with D Screws
The Limitations of Sounder/Strobes
The Sounder and/or Strobe will not work without power. The sounder/
strobe gets its power from the fire/security panel monitoring the alarm
system. If power is cut off for any reason, the sounder/strobe will not provide the desired audio or visual warning.
The Sounder may not be heard. The loudness of the sounder meets (or
exceeds) current Underwriters Laboratories’ standards. However, the
sounder may not alert a sound sleeper or one who has recently used drugs
or has been drinking alcoholic beverages. The Sounder may not be heard
if it is placed on a different floor from the person in hazard or if placed too
far away to be heard over the ambient noise such as traffic, air conditioners, machinery or music appliances that may prevent alert persons from
hearing the alarm. The Sounder may not be heard by persons who are
hearing impaired.
WARNING
must be installed within an area where it can be seen by building occupants. The strobe must not be installed in direct sunlight or areas of high
light intensity (over 60 foot candles) where the visual flash might be disregarded or not seen. The strobe may not be seen by the visually im-
paired.
The signal strobe may cause seizures. Individuals who have a positive
photic response to visual stimuli with seizures, such as epileptics, should
avoid prolonged exposure to environments in which strobe signals, including this strobe, are activated.
System Sensor recommends that the Multi-Alert Sounder and Signal
Strobe always be used in combination so that the risks from any of the
above limitations are minimized.
The Signal Strobe may not be seen. The electronic visual warning signal
that flashes at least once every three seconds meets or exceeds current Underwriters Laboratories’ standard 1971 and uses an extremely reliable xe-
The signal strobe cannot operate from coded power supplies. Coded
power supplies produce interrupted power. The strobe must have an uninterrupted source of DC power in order to operate correctly.
non flash tube. The visual warning signal is suitable for direct viewing and
Three-Year Limited Warranty
System Sensor warrants its sounder/strobe to be free from defects in materials and workmanship under normal use and service for a period of three
years from date of manufacture. System Sensor makes no other express
warranty for this sounder/strobe. No agent, representative, dealer, or employee of the Company has the authority to increase or alter the obligations or limitations of this Warranty. The Company’s obligation of this
Warranty shall be limited to the repair or replacement of any part of the
sounder/strobe which is found to be defective in materials or workmanship under normal use and service during the three year period commencing with the date of manufacture. After phoning System Sensor’s toll free
number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-
ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifications, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
D900-08-00 4 I56-732-04
© System Sensor 1996
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