INSTALLATION AND MAINTENANCE INSTRUCTIONS
SpectrAlert Selectable Output Strobes,
Horns, and Horn/Strobes
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
For use with the following models:
Strobes - 12/24 volt: S1224MC, S1224MCW, S1224MCSP, S1224MCSPW, S1224MCP, S1224MCPW
Combo - 12/24 volt: P1224MC, P1224MCW, P1224MCSP, P1224MCSPW, P1224MCP, P1224MCPW
Horns - H12/24, H12/24W
Suffix “W” indicates white housing models. Suffix “SP” indicates “FUEGO” (Spanish word for “FIRE”) lettering on housing.
Suffix “P” indicates plain housing (no lettering).
The Products to which this manual applies may be covered by one or more of the
following U.S. Patent numbers: 5,914,665; 5,850,178; 5,598,139; 6,049,446; 6,133,843; 6,522,261; 6,661,337; 5,931,569; 6,793,375; 6,822,400; 6,833,783; 6,838,997
Specifications
Automatic selection for 12 or 24 volt rated operation (DC or Full-Wave Rectified)
Electrical
Horns, Strobes, and
Horn/Strobes Voltages:
Operational Voltage Ranges:
Synchronous Applications
with MDL Module:
Regulated 12 DC/FWR and Regulated 24 DC/FWR
12V=8-17.5 Volts; 24V=16-33 Volts
12V=9-17.5 Volts; 24V=17-33 Volts
10-93% RH (non-condensing)
Operational Humidity Range:
NOTE: Horn units will operate on walk tests with on-time durations of .25 sec. or greater.
Flash Rate:
1 flash per second
Operating Temperature:
Selectable Light Outputs:
12/24 Volt Applications:
24 Volt Application:
32° F to 120° F (0° C to 49° C)
All candelas are selectable via a manual slide switch.
15 or 15/75 candela
30, 75, 110 candela
15/75 is listed at 15 candela per UL 1971 but will provide 75 candela on axis
(straight ahead). 15, 30, 75, or 110 are rated for that candela.
Sound output levels are established at Underwriters Laboratories in their reverber-
ant room. Always use the sound output specified as UL Reverberant Room when
comparing products.
Sound Output:
Listings:
UL S5512 (Strobe); UL S4011 (Combo)
Note for Strobes:
Do not exceed: 1) 8-17.5 or 16-33 voltage range limit; 2) maximum number of 70
strobe lights when connecting the MDL Sync module with a maximum line im-
pedance of 4 ohms per loop and; 3) maximum line impedance as required by the
fire alarm control manufacturer.
The models S1224MC, S1224MCW, S1224MCSP, S1224MCSPW, S1224MCP, S1224MCPW, P1224MC, P1224MCW, P1224MCSP, P1224MCSPW, P1224MCP, and
P1224MCPW incorporate a patented voltage booster design that has a more consistent flash bulb voltage over the range of candela selections. The benefit to
the customer is a high quality strobe device.
General Description
stalled after July 1, 1996, must produce Temporal Coded Signals.
The SpectrAlert series notification appliances are designed to
Signals other than those used for evacuation purposes do not have
to produce the Temporal Coded Signal. Temporal coding is accom-
plished by interrupting a steady sound in the following manner:
meet the requirements of most agencies governing these devices,
including: NFPA, ADA, The National Fire Alarm Code, UL, ULC,
FM, CSFM, MEA. Also, check with your local Authority Having
Jurisdiction for other codes or standards that may apply.
The SpectrAlert series can be installed in systems using 12- or 24-
volt panels having DC or full-wave rectified (FWR) power supplies.
The series can also be installed in systems requiring synchroniza-
tion (module MDL or compatible equivalent required) or systems
that do not require synchronization (no module required).
1
1
1
1
1
/
2
Sec.
On
/
2
Sec.
Off
/
2
Sec.
On
/
2
Sec.
Off
/
2
Sec.
On
11/2 Sec.
Off
Repeats
Power Supply Considerations
Panels typically supply DC filtered voltage or FWR (full-wave
rectified) voltage. The system design engineer must calculate the
number of units used in a zone based on the type of panel supply.
Be certain the sum of all the device currents do not exceed the
current capability of the panel. Calculations are based on using
the device current found in the subsequent charts and must be
the current specified for the type of panel power supply used.
NOTICE: This manual shall be left with the owner/user of this equipment.
Fire Alarm System Considerations
Temporal and Non-Temporal Coded Signals:
The American National Standards Institute and the National Fire
Alarm Code require that all horns used for building evacuation in-
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NOTE: SpectrAlert selectable output strobes, set at 15 and 15/75cd,
automatically work on both 12V and 24V power supplies.
Figure 2: Candela Selections
For strobe candela selection, adjust slide switch located
on the rear of the product while watching the viewing win-
dow on the side of the reflector.
NOTE: The strobe is not listed for 12V operating voltages when
set to 30, 75 or 110 candelas. Use only those settings marked as
OK in the chart above.
Permissible Candela Settings:
Candela
Setting
Operating Voltage
NOTE: The low volume setting of some tones must NOT be used
for public mode applications when the device is powered from a 12-
volt panel. Refer to the Sound Output Guide on the previous page.
12V
OK
24V
OK
OK
OK
OK
OK
15
15/75
30
OK
Temp/Non-Temp
ON=NON-Temporal, OFF=Temporal
3KHz/Electromechanical
A0133-00
75
Viewing Window
110
ON=3KHz, OFF=Electromechanical
Check terminal polarity before wiring. For proper operation, make sure the correct wire
polarity is applied to the unit.
WARNING
Figure 5: Horns and strobes powered in tandem
NOTE: Supply power must be continuous for proper operation.
Figure 3: Horn Factory Default Setting
The factory default setting is High, Temporal 3, and Electrome-
chanical tone.
TANDEM OPERATION
Factory
HORN/STROBE COMBO
DIP Switch
OFF
ON
Default
Horn +
Low
High
TO NEXT
DEVICE OR
EOL
FACTORY
INSTALLED
JUMPERS
+
–
FROM:
FACP, MODULE
OR PREVIOUS
DEVICE
A0110-00
Temporal
Non-Temporal
3000Hz
Strobe +
Strobe – Horn –
Electromech.
A0112-00
Base (rear)
Horn selections using 3-position DIP switch on horn/
strobe (refer to Figure 3):
Figure 6: Any combination of models powered by a
NOTE: When powered from a FWR supply, the horn will be mod-
ulated (turned on and off) by 120Hz causing it to sound different
than if powered by a DC supply.
4-wire circuit to provide independent horn and strobe op-
eration (remove factory installed jumpers, see Figure 8)
NOTE: Strobes must be powered continuously for horn operation.
High/Low Volume
ON=High Volume, OFF=Low Volume
(+)
(+)
(+)
H
O
R
N
H
O
R
N
System Operation – Non-Synchronized Devices:
Figure 4a: Any combination of models powered by a
2-wire circuit:
E
O
L
(–)
(+)
(–)
(–)
(–)
C
O
M
B
O
HORN
HORN/STROBE
STROBE ONLY
(+)
(+)
(+)
(+)
TWO WIRE SYSTEM
ANY MIX OF MODELS
WIRED FOR TANDEM
OPERATION
E
O
L
(+)
(–)
(+)
(–)
S
T
R
O
B
E
S
T
R
O
B
E
E
O
L
(–)
(–)
(–)
(–)
A0111-00
System Operation – Synchronized Devices:
Figure 4b: Any combination of models powered by a
2-wire circuit:
A0113-00
HORN
HORN/STROBE
STROBE ONLY
(+)
(–)
(+)
(+)
(+)
TWO WIRE SYSTEM
ANY MIX OF MODELS
WIRED FOR TANDEM
OPERATION
E
O
L
(–)
(–)
(–)
SYNCHRONIZATION MODULE
A0111-00
D900-28-00
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Figure 7: Horns and strobes powered independently
(horn operated on coded power supply)
Figure 8: Removal of horns and strobes from
mounting plates
NOTE: Strobes must be powered continuously for horn operation. To remove units from mounting plates, insert Quick Click Re-
moval Tool as shown to unlock snap. While pushing in Removal
Tool to release the snap, pull back on the horn/strobe. Hinge the
horn/strobe module, disengage the Locking Rib, and lift the horn/
INDEPENDENT OPERATION
HORN AND STROBE
HORN +
FACTORY INSTALLED
strobe away from the mounting plate.
JUMPER WIRES REMOVED
PLASTIC SNAP LEVER
STROBE +
INSERT REMOVAL TOOL
NOTE: STROBES MUST
BE POWERED CONTINUOUSLY
FOR HORN OPERATION.
HORN +
TO NEXT
DEVICE OR
EOL
STROBE +
STROBE –
STROBE –
FROM:
TO NEXT
DEVICE OR
EOL
FACP, MODULE (MDL)
OR PREVIOUS
DEVICE
HORN –
HORN –
Break wire as shown for
supervision of connection.
DO NOT allow stripped wire
leads to extend beyond switch
housing. DO NOT loop wires.
A0114-00
A0115-00
TAB SLOT
TAB
Mounting Diagrams:
Screw types used for mounting:
Strobe or Horn/Strobe with small footprint
mounting plate:
S-MP, S-MPW
2-INCH BACK BOX
3
A = 8-32 x ⁄
4
flat head
B
B = 6-32 x 15⁄
16
pan head
Strobe or Horn/Strobe with universal mounting plate:
D-MP, D-MPW, D-MP-FC, D-MPW-FC
B
4-INCH BACK BOX
WALL OPENING MUST
EQUAL PLATE OPENING
A
LOCKING RIB SLOT
LOCKING RIB
1. Mount plate to back box using screws B.
2. Break off four tabs from unit.
A0116-00
3. Complete field wiring, making sure wall opening is large enough for
terminals to fit through.
4. Insert locking rib into slot on plate.
5. Press into plate; unit will make a “click” when it has locked into place.
A
WALL OPENING MUST
EQUAL PLATE OPENING
A0117-00
LOCKING RIB
LOCKING RIB SLOT
Strobe or Horn/Strobe surface mount:
BBS, BBSW
4-INCH BACK BOX
1. Mount plate to back box using screws A, making sure wall
opening is equal to the plate opening.
2. Complete field wiring.
A
3. Insert locking rib into slot on plate.
4. Press into plate, unit will make a “click” when it has locked
into place.
A
LOCKING RIB SLOT
LOCKING RIB
1. Mount skirt to back box with screws A.
2. Complete field wiring.
A0118-00
3. Insert locking rib on unit into slot on skirt.
4. Press into skirt; unit will make a “click” when it has locked into place.
(NOTE: Strobe and skirt may also be mounted to a 2-inch box using
screws B instead of screws A.)
Please refer to insert for the Limitations of Fire Alarm Systems
Three-Year Limited Warranty
System Sensor warrants its enclosed horn. strobe, or horn/strobe to be free from defects in materials
to: System Sensor, Returns Department, 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 dam-
age, 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.
and workmanship under normal use and service for a period of three years from date of manu-
facture. System Sensor makes no other express warranty for this horn, strobe, or horn/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 horn, strobe, or horn/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
FCC Statement
SpectrAlert Strobes and Horn/Strobes have been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a com-
mercial environment. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his own expense.
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