$133.80 $66.90

The Wattstopper FS-505 is a low voltage ultrasonic fixture occupancy sensor designed for stairway applications, mounting directly to the fixture at 120/277VAC. Ultrasonic technology ensures reliable occupancy detection in challenging stairwell geometries where PIR coverage is limited. The low-profile form factor integrates cleanly into commercial fixture housings and operates via the FS Low Voltage Sensor series with 24VDC supplied through an RJ45 connector from a compatible FS-PP power pack.

Sensor TypeUltrasonic
Voltage120/277V
MountFixture Mount
ApplicationStairway

SKU:OKJ389458249 Category:

The Wattstopper FS-505 is a low voltage ultrasonic fixture occupancy sensor designed for stairway applications, mounting directly to the fixture at 120/277VAC. Ultrasonic technology ensures reliable occupancy detection in challenging stairwell geometries where PIR coverage is limited. The low-profile form factor integrates cleanly into commercial fixture housings and operates via the FS Low Voltage Sensor series with 24VDC supplied through an RJ45 connector from a compatible FS-PP power pack.

Sensor Type Ultrasonic
Voltage 120/277V
Mount Fixture Mount
Application Stairway

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