SpectrAlert SP2C Series
Ceiling Mount Speaker/Strobes for
Fire Protective Signaling Systems
INSTALLATION AND MAINTENANCE INSTRUCTIONS
A Division of Pittway
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 National Fire Protection Association (NFPA) has pub-
lished standards and recommended practices for the speak-
er/strobes described in this manual. As a result, the
installer must be familiar with these requirements as well
as all local codes and special requirements of the authority
having jurisdiction.
The SpectrAlert SP2C series ceiling mount speaker/strobe
can be operated with distribution amplifiers having an out-
put 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
allow for DC supervision.
The SpectrAlert SP2C series ceiling mount strobe can be
installed in systems using 24-volt panels having DC or full-
wave rectified (FWR) power supplies. The strobes can also
be installed in applications requiring synchronization (MDL
required) or applications that do not require synchroniza-
tion (no module required).
The SpectrAlert SP2C series ceiling mount speaker/strobes
are designed to meet the requirements of most agencies gov-
erning these devices, including: NFPA, The National Fire
Alarm Code, UL, CSFM, MEA. Also, check with your
local Authority Having Jurisdiction for other codes or stan-
dards that may apply.
Specifications: Speaker
Mechanica
l
Input Terminals:
12 to 18 AWG
(3.31 to 0.82 mm
2
)
Speaker Size:
4 inches
(101 mm)
Overall Dimensions: 6.8
″
diameter
(173 mm)
Electrical
Voltage Input:
25 volts or 70.7 volts
(nominal)
Frequency Range:
400 - 4000 Hz
Power:
1/4, 1/2, 1 and 2 Watts
Operating
Temperature Range: 32° to 120°F
(0° to 49°C)
Listings:
UL S4048 Speaker/Strobe
D690-02-00
1
I56-1455-004R
For use with the following models: SP2C2415, SP2C241575, SP2C2430, SP2C2475,
SP2C2495, SP2C24115, SP2C24177
U.S. Patent Nos. 5,850,178; 5,598,139; 6,049,446; 6,057,778; D424465
Specifications: Strobe
Voltage Range:
DC or Full-Wave Rectified
15 through 115 candela models
Strobes:
16 to 33 volts DC or Full Wave Rectified
(with MDL module):
17 to 33 volts DC or Full Wave Rectified
177 candela models only
Strobes:
16 to 33 volts DC; 20 to 33 volts Full
Wave Rectified
(with MDL module):
17 to 33 volts DC; 21 to 33 volts Full
Wave Rectified
Flash Rate:
1 flash per second
Light Output:
Models with 1575 are listed at 15 candela
per UL1971 but will provide 75 candela on
axis (straight down).
Models with 15, 30, 75, 95, 115 and 177
are listed for that candela.
Note: Strobes have a 16–33 Volt Operating Range Limit. Do not exceed the maximum number of 70 strobe lights when
connecting the MDL Sync module zone with a maximum line impedance of 4 Ohms per loop.
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 cur-
rents 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 volt-
age 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 (simu-
lates “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.
Note: If class “A” wiring is installed, the wire length may be
up to 4 times the single wire length in this calculation.
