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

ROCK SKU: WAT-FS-505
MFG Part #: FS-505

$133.80

$95.57

Spec Sheet Installation Guide

Estimated Lead Time: 1 week

Returns

Returns accepted within 30 days of purchase, in original unopened packaging, unused and in resalable condition.
All returns require prior authorization — email info@rocklighting.com before shipping anything back.
Approved returns are subject to a 25% restocking fee, deducted from the refund.
No restocking fee when the problem is ours — damaged, defective, wrong item shipped, or an inaccurate listing.

Return & Refund Policy · 323-419-5591

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.