Eaton OS310U-LA Occupancy Sensor Switch - cULus Listed
Part Number: OS310U-LA
Quick Summary
Eaton occupancy sensor switch automates lighting control for offices, classrooms, and corridors. If your spaces waste energy from unattended lighting or rely on manual switches, this sensor helps close that gap. With cULus Listed and NOM certifications, it meets North American electrical safety standards for common commercial installs, while its 120 V single-phase design covers a broad range of applications. Flush mounting and a nightlight option add convenience in high-traffic areas, delivering measurable business value through energy efficiency and safer occupancy-aware lighting control. It supports 1-pole and 3-way configurations, enabling flexible retrofits and scalable solutions for growing facilities.
Product Information
Extended Description
OS310U-LA Eaton: Eaton occupancy sensor switch, Motion sensor with nightlight, Flush, 120V, Wire leads, Maintained closure, Light almond, Incand, MLV, ELV, Flrsnt, CFL, LED, halo, 1-pole, 3-way, 1-phase, 1000 sq ft, Occupancy, 1000W 710858
Product Name
Eaton occupancy sensor switch
Catalog Number
OS310U-LA
UPC
032664710858
Product Length/Depth
3.31 in
Product Height
5.44 in
Product Width
2.88 in
Product Weight
0.001 lb
Certifications
cULus Listed NOM
Special features
Motion sensor with nightlight
Type
Occupancy sensor switch
Voltage rating
120 V
Number Of Poles
Single-pole
Phase
Single-phase
Power consumption
1000 W
Wiring method
Wire leads
Sensor type
Occupancy
Mounting method
Flush
Closure type
Maintained
Load type
ELV INC HAL CFL FLR LED MLV
Number of ways
Three-way
Range
1000 sq ft
Color
Light almond
Motion sensor with nightlight: The built-in motion detection plus a soft nightlight reduce unnecessary daytime lighting and provide safe navigation after hours. This yields tangible energy savings in corridors and open-plan spaces, while improving occupant comfort. Application: office hallways, classrooms, and stairwells benefit from automatic illumination without harsh transitions. 120 V, 1000 W load rating: Handles a wide range of lighting loads, including INC, LED, CFL, HAL, FLR, MLV, and ELV, ensuring compatibility during retrofits and new installs. Business impact: minimizes over-illumination and future-proofs the space against evolving lamp technologies. Application: multi-technology lighting teams gain a reliable control point across commercial interiors. Wiring method: Wire leads simplify field wiring and shorten installation time. Benefit: reduces labor costs and errors during mounting. Application: retrofit projects in existing panels or new constructions. Mounting method: Flush mount saves wall space and preserves esthetics in tight corridors and modern interiors. Benefit: cleaner installations and faster retrofits. Application: residential and commercial spaces where wall contour matters. Load type compatibility: ELV, INC, HAL, CFL, FLR, LED, MLV ensures broad compatibility with modern and legacy fixtures. Benefit: prevents compatibility issues and supports energy-efficient lighting strategies. Application: facilities aiming for incremental upgrades while maintaining current fixture stock. Number of ways: Three-way configuration enables flexible control from multiple locations. Benefit: improves accessibility and convenience in large rooms. Application: conference centers and open offices. Range: 1000 sq ft coverage supports mid-sized spaces with consistent sensing. Benefit: predictable performance across typical commercial areas. Application: lobbies and classrooms seeking reliable occupancy sensing.
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FAQs
OS310U-LA operates at 120 V and uses wire leads for simple field wiring. It supports 1-pole and 3-way configurations, so identify line and load prior to connection. Follow the provided specification sheet to ensure correct traveler wiring in 3-way circuits, and verify cULus NOM compliance for your project. Install with power off, mount flush, and test occupancy sensing and nightlight function before commissioning.
Yes. The unit supports a range of loads including INC, LED, CFL, HAL, FLR, and MLV, but it is not a dimmer. To avoid flicker, pair it with fixtures that are compatible with non-dimmable control and ensure proper wiring of line and load. For mixed technologies in the same circuit, confirm that the driver and ballast configurations are compatible with occupancy sensing control.
OS310U-LA is a three-way occupancy sensor switch, enabling control from multiple locations. For a proper installation, connect the master unit at the line side and use traveler conductors to a compatible remote switch or another OS310U-LA where permitted. This setup provides convenient, centralized occupancy-based lighting control across larger workspaces while preserving energy savings.
The OS310U-LA is cULus Listed and NOM certified, which satisfies North American electrical safety and approval requirements for commercial and residential installations. These certifications support code compliance and provide assurance when integrating into existing building management systems. Always cross-check local codes and permit requirements for your jurisdiction and application.
The occupancy sensing capability reduces wasted lighting, delivering measurable energy savings and a faster return on investment. Nightlight support improves safety with low-level illumination without full power consumption. With robust compatibility (INC, LED, CFL, HAL, FLR, MLV) and straightforward retrofits, maintenance needs are minimized and lifecycle costs are lowered in high-traffic areas.