1 I56-4019-000
INSTALLATION AND MAINTENANCE INSTRUCTIONS
For use with the following models:
S900RL and S900RLFIRE
SpectrAlert Strobe
SPECIFICATIONS
Size:
Weight
：
Operating Temperature Range
：
Rated Supply Voltage:
Operating Voltage Range
：
Max Operating Current:
Flash Frequency
：
Location:
Software Ver.
142.7mmX 126.2mm X 62mm
129g
-10°C to 55°C
24VDC
19-30VDC
30mA@24V
1.0Hz
Non-residential construction (Indoor)
A
GENERAL DESCRIPTION
The S900RL and S900RLFIRE SpectrAlert strobes by System
Sensor are a series of visual signaling devices for use on fire
alarm applications. The S900RLFIRE strobe has the word ‘FIRE’
printed in 25mm height lettering on the cover, whereas the
S900RL has a plain cover. These strobes are designed to be used
on 24 Volt DC systems and have low operating current. When
these strobes operate on the rated supply voltage, they will flash
once per second until the power supply is switched off.
Note
: They are not compatible for use with MDL or MDL3
synchronization modules or coded power supplies.
STROBE OPERATING CONSIDERATIONS:
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:
18AWG Solid:
16AWG Solid:
14AWG Solid:
12AWG Solid:
Example: Assure you have 10 devices on a zone and each
require 50mA average and 2,000m of 14 AWG wire (total
length= ou return). The voltage at the end of the loop is
0.050amps per device x 10 devices x 10ohms/1,000m x 2,000m
=10 volts drop.
The same number of devices using 12 AWG wire produce only 7
volts drop. The same devices using 18 AWG wire will produce
27 volts. Consult your panel manufacturer’s specifications, as
well as SpectrAlert’s operating voltage range to determine
acceptable voltage drop.
Terminal Diagram:
27
Ω
/1,000m
17
Ω
/1,000m
10
Ω
/1,000m
7
Ω
/1,000m
POWER SUPPLY CONSIDERATIONS
Power System supply DC filtered voltage. The system design
engineer must calculate the number of units used in a zone
based on the type of power supply.
Be certain the sum of all the device currents do not exceed the
current capability of the supply in order to assure the product
can work normally.
WIRE SIZE
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 voltages drop.
To Power
Supply
28 Tuanjie South Road
Xi'an Hi-tech Development Zone
710075, China
REMOVAL OF THE UNIT FROM MOUNTING PLATES
To remove units from mounting plates, insert Quick Click Removal Tool as shown to unlock snap. While pushing in Removal Tool to
release the snap, pull back on the strobe. Hinge the horn/strobe module, disengage the locking Rib, and lift the horn/strobe away from
the mounting plate.
PLASTIC SNAP LEVER
INSERT REMOVAL TOOL
TAB SLOT
TAB
0.5 Sec.
LED Off
0.5 Sec.
LED On
0.5 Sec. 0.5 Sec. 0.5 Sec.
LED Off
LED On LED Off
Repeats
I5
6
-4
019
-000
