SpectrAlert Selectable Output Series
Wall Speaker/Strobes for
Fire Protective Signaling Systems
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
NOTICE: This manual shall be left with the owner/user of
this equipment.
General Description
The SpectrAlert SP2 series speaker/strobes are designed to
meet the requirements of most agencies governing these
devices, including: NFPA, ADA, The National Fire Alarm
Code, UL, CSFM, MEA. Also, check with your local Author-
ity Having Jurisdiction for other codes or standards that
may apply.
The SpectrAlert SP2 series speakers can be operated with
distribution amplifiers having an output voltage of either
25 volts or 70.7 volts.
The speakers operate at any one of four input power levels.
The output sound level is selected at the time of installa-
tion, but can be changed, if necessary.
The speaker is also equipped with a capacitive input to al-
low for DC supervision.
The SpectrAlert SP2 series strobe can be installed in systems
using 12 or 24-volt panels having DC or full-wave rectified
(FWR) power supplies. The strobes can also be installed
in applications requiring synchronization (module MDL or
compatible equivalent required) or applications that do not
require synchronization (no module required).
D900-29-00 1 I56-1809-009R
For use with models: SP2R1224MC, SP2W1224MC and SP2R1224MCP.
U.S. Patent Nos. 5,593,569; 5,914,665; 5,850,178; 5,598,139; 6,049,446; 6,127,935; 6,522,261
Specifications: Speaker
Mechanical
Input Terminals: 12 to 18 AWG (3.31 to 0.82 mm2)
Speaker Size: 4 inches (101 mm)
Overall Dimensions: 8.25˝ × 4.9˝
Automatic selection for 12 or 24 volt rated operation
(DC or Full-Wave Rectified)
Electrical
For Strobes
Voltages: Regulated 12 DC/FWR and
Regulated 24 DC/FWR
Operational Voltage Ranges: 8-17.5 Volts and 16-33 Volts
Synchronous Applications
with MDL Module: 9-17.5 Volts and 17-33 Volts
Flash Rate: 1 flash per second
Operating Temperature: 32° F to 120° F (0° C to 49° C)
Storage Temperature: –20°C to 70°C
Operational Humidity Range: 10 – 93% RH (non-condensing)
Selectable Light Outputs: All candelas are selectable
via a manual slide switch.
12/24 Volt Applications: 15 or 15/75 candela
24 Volt Application: 15,15/75, 30, 75, 110 candela
15/75 is listed at 15 candela per UL 1971 but will pro
-
vide 75 candela on axis (straight ahead). 15, 30, 75, or
110 are rated for that candela.
Maximum Supervisory
Voltage (Speaker): 50 VDC
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 S5512 (Strobe); UL S4048
(Speaker/Strobe)
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 imped-
ance as required by the fire alarm control manufacturer.
NOTE: The SP2 Series is suitable for dry and damp environments.
Power Supply Considerations For Strobes
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 Table 2 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 necessary 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”).
Typical wire size resistance:
18 AWG solid: Approximately 8 ohms/1,000 ft.
16 AWG solid: Approximately 5 ohms/1,000 ft.
14 AWG solid: Approximately 3 ohms/1,000 ft.
12 AWG solid: Approximately 2 ohms/1,000 ft.
The models
SP2R1224MC, SP2W1224MC and SP2R1224MCP
incorporate a new patent-pending 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.
(2 pages)
(4 pages)
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