Leviton PIR High-Bay Occupancy Sensor with 3 Lenses

The Leviton OSFHU-ITW is a fixture-mounted passive infrared (PIR) sensor that automates high-bay lighting with three interchangeable lenses for up to 40 ft mounting heights.

Built for warehouses, manufacturing floors and other tall-ceiling environments, this compact Leviton occupancy sensor installs directly into an industrial fluorescent luminaire or a 1/2" electrical knockout. It combines a self-contained relay with passive infrared detection to switch an individual light fixture on or off when people enter or leave the coverage zone. The unit ships with three lens options—high-bay, low-bay and an aisle mask—so one device can be tailored to different ceiling heights and aisle layouts.

How does the OSFHU-ITW detect movement at high mounting heights?

The sensor uses passive infrared technology to sense changes in heat patterns created by moving objects against the background environment. Because PIR responds to thermal motion rather than visible light, it works in dark or lit spaces and is effective at elevated positions when paired with the correct lens.

• Passive infrared detection picks up motion by measuring temperature changes.
• Three interchangeable lenses adjust the detection pattern for high-bay, low-bay or aisle use.
• Reliable coverage designed for mounting heights up to 40 feet.
• Optional offset adapter (OSFOA-00W) increases field-of-view for deep fixtures.

How simple is installation for a fixture-mounted solution?

Installation is straightforward: the sensor mounts into a standard 1/2" knockout on the fixture or into a junction box using the supplied locknuts. A built-in quicksnap on the 1/2" nipple reduces fastener work, and the 21" wire leads give installers room to reach ballast connections without extra wire or connectors.

• Mounts directly into industrial fluorescent fixtures or 1/2" knockout boxes.
• Quicksnap locking mechanism simplifies attachment and saves installation time.
• Includes 21" wire leads to access ballast ends without additional materials.
• No separate relay or external control gear required for each fixture.

Which lens should I choose for my space and what coverage can I expect?

The OSFHU-ITW includes three lens patterns so you can tailor detection to the room geometry: a 360° high-bay lens for taller ceilings, a 360° low-bay lens for moderate heights, and an aisle mask to narrow the coverage along rack rows. With the appropriate lens installed, the sensor maintains dependable occupancy coverage up to 40 feet above the floor.

• 360° high-bay lens for open spaces with ceilings up to the rated 40 ft.
• 360° low-bay lens for shorter mounting heights and more concentrated coverage.
• Aisle mask narrows the beam for long, narrow aisles between shelving.
• Use an offset adapter if deep fixture bodies block the sensor’s natural field-of-view.

What environments and conditions is this model suited for?

The standard OSFHU-ITW is intended for typical industrial and commercial high-bay settings. Leviton also offers a cold-storage variant rated down to -40°F for refrigerated environments. The fixture-mounted design makes it especially useful where individual fixture control is preferred over centralized sensors.

• Ideal for warehouses, factories, gymnasiums and other high-ceiling areas.
• Cold-storage model available separately for subfreezing applications.
• Fixture-mounted relay provides per-fixture switching without extra control cabinets.
• Interchangeable lenses adapt the same basic unit to multiple layout types.

Who this is for: Facility managers, electrical contractors and retrofit teams who need reliable, per-fixture occupancy sensing in high-ceiling spaces will appreciate the OSFHU-ITW. It’s a practical choice when you want to reduce wasted lighting runtime, simplify wiring at the fixture, and adapt detection geometry with interchangeable lenses. Choose the cold-storage variant if temperatures drop well below freezing, or add the offset adapter when fixtures obstruct the sensor’s typical sightlines.