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Wattstopper Low Voltage Ultrasonic Fixture Occupancy Sensor for Stairway Applications; 120/277 VAC Fixture Mount, FS-505

Wattstopper FS-505 Low Voltage Ultrasonic Fixture Occupancy Sensor, 120/277V, Stairway, FS-505

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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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