System Sensor SP2R1224MCK User Manual

System Sensor Equipment

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SpectrAlert Selectable Output Outdoor
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. Also, check with your local Authority 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.

D900-40-00

1

I56-2609-002R

Model SP2R1224MCK

U.S. Patent Nos. 5,850,178; 5,598,139; 6,049,446; 6,522,261; 6,661,337; 6,793,375;

6,822,400; 6,833,783; 5,931,569; 6,856,241

Specifications:
Mechanical:
Input Terminals:

12 to 18 AWG

Speaker Size:

4 inches (101 mm)

Grille Size:

4

13

/

16

˝ (122 mm)

Outdoor Back Box:

9.22˝ Ч 5.87˝ Ч 2.38˝

Electrical:
Operating Temp. Range:

–40°F to 150.8°F (–40°C to 66°C)

Max. Supervisory Voltage: 50 VDC
For Speaker:
Voltage Input:

25 volts or 70.7 volts

(nominal)

Frequency Range:

400 – 4000 Hz

Input Power Settings:

1

/

4

,

1

/

2

, 1 and 2 Watts

Sound Output:
Sound output levels are established at Underwriters

Laboratories in their anechoic room. Always use the
sound output specified as UL Anechoic Room when
comparing products.

For Strobe:
Voltages:

Regulated 12 DC/FWR and
Regulated 24 DC/FWR

Operational Volt. Ranges: 8–17.5 Volts and 16–33 Volts
Synchronous Applications
with MDL Module:

9–17.5 Volts and 17–33 Volts

NOTE: The outdoor speaker/strobe is suitable for use in
dry and wet environments.
Flash Rate:

1 flash per second

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.

Listings: UL 1971/1638 (Strobe); UL 1480 (Speaker); NEMA 3R
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 imped-
ance as required by the fire alarm control manufacturer.

The speaker is also equipped with a capacitive input to
allow 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).

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.

Model SP2R1224MCK incorporates a new 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.

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