00-0477-003 INSTALLATION
The SD300 Series direct-wire detectors' use a separate
mounting bracket to simplify installation,service and main-
tenance.
Mount the base on a box which is at least 1.5 inches(3.81
cm)deep. Suitable boxes include:
- 4" (10.16 cm)square box with plaster ring.
• 4" (10.16 cm) octagonal box.
• 3.5" (8.89 cm)octagonal box.
• Single-gang box.
7 NOTE: Because of the inherent supervision provided by the SLC
loop, end-of-line resistors are not required. Mring "T-taps"or
branches are permitted for Style 4(Class'B' wiring.
OPERATION
Each SD300/SD300T uses one of 99 possible addresses
on the SLC loop. It responds to regular polls from the
control panel and reports its type and status. It blinks its
LED when polled,and turns the LED on when commanded
by the panel.
The detector uses the light scattering principle. It repre-
sents the latest in smoke sensing technology.
COMMON SPECIFICATIONS
Voltage range: 15-28 VDC (peak).
Standby current: 150 pA @ 24 VDC.
LED current: 7 mA @ 24 VDC (latched"ON").
Air velocity: 3000 ft./min. (15 m/sec.) maximum.
Diameter: 5.0 inches (12.7 cm).
Height: 3.0 inches (7.6 cm).
Temperature: 0°-49°C (32° - 120°F).
Relative humidity: 10% - 93% non-condensing.
SD300T SPECIFICATIONS
Includes 135°F(58°C)fixed-temperature thermal element.
PRODUCT LINE INFORMATION
Model Description
SD300 Addressable Photoelectric Sensor with mount-
ing bracket and removable terminal block.
SD300A Same as above with ULC listing.
SD300T Addressable Photoelectric Sensor with built-in
135°F (58°C) fixed-temperature thermal ele-
ment.
SD300TA Same as above with ULC listing.
RA40OZ Remote LED. Mounts to a single-gang box.
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