D900-37-00
1
I56-2257-005R
For use with the following models:
Strobe - 12/24 volt:
S1224MCK
Combo - 12/24 volt: P1224MCK
Horn - 12/24 volt:
H12/24K
“K” model series are outdoor rated when installed with System Sensor WBB.
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; 6,793,375; 6,822,400; 5,931,569; 6,833,783; 6,838,997;
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
General Description
The SpectrAlert series notification appliances are designed to
meet the requirements of most agencies governing these devices,
including: NFPA, ADA, The National Fire Alarm Code, UL, and
ULC. 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).
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-
stalled after July 1, 1996, must produce Temporal Coded Signals.
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:
Specifications
Automatic selection for 12 or 24 volt rated operation (DC or Full-Wave Rectified)
Electrical
Horns, Strobes, and
Horn/Strobes Voltages:
Regulated 12 DC/FWR and Regulated 24 DC/FWR
Operational Voltage Ranges:
12V=8-17.5 Volts; 24V=16-33 Volts
Synchronous Applications
with MDL Module:
12V=9-17.5 Volts; 24V=17-33 Volts
NOTE: Horn units will operate on walk tests with on-time durations of .25 sec. or greater.
Flash Rate:
1 flash per second
K Series Operating Temperature:
Strobe, horn and horn/strobe models are indoor and outdoor listed, having a temperature
range of –40° F to 150.8° F (–40° C to 66° C)
All models are indoor/outdoor listed, strobes per UL 1971 and UL 1638, horns per UL 464.
Selectable Light Outputs:
All candelas are selectable via a manual slide switch.
12/24 Volt Applications:
15 or 15/75 candela
24 Volt Application:
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:
Sound output levels are established at Underwriters Laboratories in their reverberant room.
Always use the sound output specified as UL Reverberant Room when comparing products.
Listings:
UL S3593/S5512 (Strobe); UL S4011 (Combo); UL 1638 and UL 1971 (Strobe); UL50 (Horn)
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 impedance of 4 ohms per loop and; 3) maximum line impedance as required by the fire alarm control manufacturer.
The models S1224MCK and P1224MCK 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.
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.
Wire Sizes
The designer must be sure that the last device on the circuit has
sufficient voltage to operate the device within its rated voltage.
When calculating the voltage available to the last device, it is nec-
essary to consider the voltage drop due to the resistance of the
wire. The thicker the wire, the less the voltage drop. Generally, for
purposes of determining the wire size necessary for the system, it
is best to consider all of the devices as “lumped” on the end of the
supply circuit (simulates “worst case”).
1
/
2
Sec.
On
1
/
2
Sec.
Off
1
/
2
Sec.
On
1
/
2
Sec.
Off
1
/
2
Sec.
On
1
1
/
2
Sec.
Off
Repeats
SpectrAlert Selectable Output
Outdoor Strobes, Horn and Horn/Strobes
firealarmresources.com
