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INSTALLATION AND MAINTENANCE INSTRUCTIONS

Low Frequency Sounder/Strobes

3825 Ohio Avenue, St. Charles, Illinois 60174

800/736-7672, FAX: 630/377-6495

www.systemsensor.com

SS-120-006 

1 I56-3889-001R

For use with the following models: P2RH-LF, P2WH-LF, HR-LF, HW-LF 

PRODUCT SPECIFICATIONS

Operating Temperature:

32°F to 120°F (0°C to 49°C)

Humidity Range:

10 to 93% Non-condensing

Strobe Flash Rate:

1 flash per second

Nominal Voltage (Low Frequency Sounder):

Regulated 12VDC/FWR or regulated 24VDC/FWR 

Nominal Voltage( Low Frequency Sounder/Strobe):

Regulated 24VDC/FWR

Operating Voltage Range (includes fire alarm panels with built in sync):

8 to 17.5V (12V nominal) or 16 to 33V (24V nominal)

Operating Voltage with MDL3 Sync Module:

8.5 to 17.5V (12V nominal) or 16.5 to 33V (24V nominal)

Input terminal wire gauge:

12 to 18 AWG

DIMENSIONS FOR PRODUCTS AND ACCESSORIES

PRODUCTS

LENGTH

WIDTH

DEPTH

Low Frequency Sounder/Strobes (including lens)

6.4˝

4.7˝

2.5˝

162 mm

119 mm

64 mm

Low Frequency Sounder

5.6˝

4.7˝

1.3˝

142 mm

119 mm

33 mm

Low Frequency Sounder Strobe with SBBR/SBBW Surface Mount Back Box

6.4˝

4.7˝

4.3˝

162 mm

120 mm

108 mm

Low Frequency Sounder with SBBR, 
SBBW Surface Mount Back Box Length 5.7˝

5.7˝

4.8˝

3.0˝

145 mm

120 mm

76 mm

MOUNTING BOX OPTIONS

2-Wire Indoor Products

4 × 4 × 1

1

/

2

, Single Gang, Double Gang, 4˝ Octagon

GENERAL DESCRIPTION

The SpectrAlert Advance low frequency series of notification appliances offers 
a range of low frequency sounder and low frequency sounder/strobe products  
for wall and ceiling applications. Studies have shown that low frequency audi-
ble devices that operate around 520Hz are more effective in waking individuals 
in sleeping areas. The sounder only version is designed for use in 12 or 24 volt, 
DC or FWR (full wave rectified) systems. Sounder/Strobe versions are only 
to be used with 24 volt, DC or FWR systems. These products are electrically 
backward compatible with the previous generation of SpectrAlert notification 
appliances. The 2-wire products fit systems where a single NAC controls both 
sounder and strobe. The System Sensor MDL3 module may be used to provide 
synchronization.

Models are approved for wall and ceiling installations.

 

FIRE ALARM SYSTEM CONSIDERATIONS

The National Fire Alarm Code, NFPA 72, requires that all sounders, used for 
building evacuation produce temporal coded signals. Signals other than those 
used for evacuation purposes do not have to produce the temporal coded sig-
nal. The National Fire Alarm Code, NFPA 72, will require effective Jan. 1, 2014 
that audible appliances installed in sleeping areas produce a low frequency 
alarm signal that shall be a square wave or provide equivalent awakening abil-
ity. System Sensor recommends spacing notification appliances in compliance 
with NFPA 72. 

LOOP DESIGN AND WIRING

The system designer must make sure that the total current drawn by the de-
vices on the loop does not exceed the current capability of the panel supply, 
and that the last device on the circuit is operated within its rated voltage. The 
current draw information for making these calculations can be found in the 
tables within this manual. For convenience and accuracy, use the voltage drop 
calculator on the System Sensor website (systemsensor.com/volt).

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 smaller the voltage drop. Wire resistance tables can be obtained 
from electrical handbooks. Note that if Class A wiring is installed, the wire 
length may be up to twice as long as it would be for circuits that are not 
fault tolerant.

NOTE:

 The total number of strobes on a single NAC must not exceed 40 for 

24 volt applications or 12 for 12 volt applications.  Loop resistance on a single 
NAC should not exceed 120 ohms for 24 volt and 30 ohms for 12 volt systems.

The sounder and strobe circuits must be wired independently, and each circuit 
must be terminated with the appropriate EOL device. Removal of a notifica-
tion device will result in an open circuit indication on the strobe loop.

NOTE:

 A shorting spring is provided between terminals 2 and 3 of the mount-

ing plate to enable wiring checks after the system has been wired, but prior 
to installation of the final product. This spring will automatically disengage 
when the product is installed, to enable supervision of the final system.

I56-3889-00

1R

NOTICE: This manual shall be left with the owner/user of this equipment.

Содержание SpectrAlert Advance

Страница 1: ...for wall and ceiling installations FIRE ALARM SYSTEM CONSIDERATIONS The National Fire Alarm Code NFPA 72 requires that all sounders used for building evacuation produce temporal coded signals Signals other than those used for evacuation purposes do not have to produce the temporal coded sig nal The National Fire Alarm Code NFPA 72 will require effective Jan 1 2014 that audible appliances installed...

Страница 2: ...ded knockout holes are provided for the sides of the box for inch and inch conduit adapter Knockout plugs in the back of the box can be used for inch and inch rear entry 4 To remove the inch knockout we recommend you use a flat head screwdriver and place the blade along the inner edge and work your way around the knockout as you strike the screwdriver as shown in Figure 7 To remove the inch knocko...

Страница 3: ... unit All products meet the light output profiles specified in the appropriate UL Standards Refer to Figures 10 12 SOUNDER SELECTION Turn the rotary switch on the back of the product to the desired setting For sounder and sounder strobe products P2H LF series current draws are listed in Tables 1 and 2 The sound output measurement for each sounder setting is shown in Table 3 FIGURE 9 V500 AND V700 ...

Страница 4: ...rranty shall be limited to the replacement of any part of the product which is found to be defec tive 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 defec tive units postage prepaid to System Sensor Returns Departm...

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