Wattstopper
®
Occupancy Sensor • Line Voltage Fixture Mount
Installation Instructions • Instructions d’Installation • Instrucciones de Instalación
No: 24741 – 06/17 rev. 1
Catalog Numbers • Les Numéros de Catalogue • Números de Catálogo: FS-155 and FS-155-1
Country of Origin: Made in China • Pays d’origine: Fabriqué en Chine • País de origen: Hecho en China
SPECIFICATIONS
Voltages ................................................ 120 - 277VAC, 60Hz
Load Requirements
@ 120VAC ..................... 0-800W ballast or incandescent
@ 277VAC .............................................. 0-1200W ballast
Time Delay ..................................... 30 seconds - 30 minutes
Coverage @ 8’ height ........................................ 10’ diameter
Operating Temperature ..................32° to 131°F (0° to 55°C)
Dimensions
Sensor body ....... 7 1/8’ x 7/8” x 11/16” (181 x 22 x 17mm)
Threaded Neck Length .................................0.35” ((9mm)
Threaded Neck Diameter ..............9/16” diameter (14mm)
Lens Collar Diameter
FS-155 ......................................................... 1” (25mm)
FS-155-1 .................................................... 1.2” (30mm
DESCRIPTION AND OPERATION
The FS-155 and FS-155-1 occupancy sensors turn lighting on and off based on occupancy. These slim, low-profile sensors are
designed for installation inside the bottom of a light fixture body. The PIR lens views the coverage area through a 9/16” diameter hole in
the bottom of the fixture.
The sensors use passive infrared (PIR) sensing technology that reacts to changes in infrared energy (moving body heat) within the
coverage area. Once the space is vacant and the time delay elapses (adjustable from 30 seconds to 30 minutes), lights will turn off.
Sensors must directly “see” motion of an occupant to detect them, so careful consideration must be given to sensor placement. Avoid
placing the sensor where shelving or other obstructions may block the sensor’s line of sight.
The FS-155/155-1 operates between 120-277VAC. It is designed for installation in a light fixture. The FS-155/155-1 sensor is equipped
with three, six-inch, 18AWG flying leads for connection to the lighting load and electrical system.
NOTE: There is an initial warm-up period. It may take up to a minute before the lights turn on due to a sensor warm-up period required
during initial power-up. This occurs during installation or after a lengthy power failure only.
INSTALLATION
1. Determine an appropriate mounting location inside the light fixture.
2. Cut a 9/16” diameter hole through the sheet metal in the bottom of
the fixture.
3. Remove the beauty ring and thumbscrew collar from the
FS-155/155-1 lens pipe.
4. Insert the lens through the hole in the bottom of the fixture then put the thumbscrew collar onto the lens pipe. Tighten it securely to
the outside of the fixture.
5. Use the holes or mounting slots at both ends of the sensor to secure it to the fixture.
6. Re-tighten the thumbscrew collar, then put the beauty ring onto the lens pipe and tighten it.
7. Connect load and supply wires as shown in Figure 2.
8. Restore power from the circuit breaker.
WARNING: TURN THE POWER OFF AT THE
CIRCUIT BREAKER BEFORE WIRING.
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Fig 1: FS-155/155-1 mounting in light xture