Pass & Seymour WS-250 PIR Wall...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$92.03
Pass & Seymour WS-250 PIR Wall Switch Occupancy Sensor, Dual-Voltage 120/277V

Pass & Seymour WS-250 PIR Wall Switch Occupancy Sensor, Dual-Voltage 120/277V

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Model: WS-250-LA

In Stock (leaves warehouse same day if ordered before 3pm ET)

$92.03
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Pass & Seymour WS-250 PIR Wall Switch Occupancy Sensor, Dual-Voltage 120/277V

The Pass & Seymour WS-250 Passive Infrared (PIR) Wall Switch Occupancy Sensor automatically turns lighting on and off based on occupancy and ambient light level, replacing existing wall switches and fitting behind a standard decorator wall plate. This dual-voltage sensor operates at 120/277 VAC, switching up to 800W at 120V or 1200W at 277V, and delivers 180° coverage up to a maximum of 900 sq ft. Finished in Light Almond with a matte finish, it is well suited to offices, classrooms, corridors, and other commercial spaces that call for automatic, occupancy-based lighting control.

Key Features

  • Dual-Voltage Operation: Rated 120/277 VAC, switching 800W at 120V or 1200W at 277V for flexible use across commercial lighting circuits.
  • Built-In Light Level Sensor: Factors ambient light into occupancy-based switching decisions to avoid unnecessary lighting during daylight hours.
  • Positive Tactile Feedback: Integrated button provides a distinct tactile click for confident manual override.
  • Broad Ballast Compatibility: Compatible with all electronic ballasts for straightforward retrofit installations.
  • Space-Saving Design: Shallow 1-inch back housing with flying leads simplifies installation behind a standard decorator wall plate.
  • Wide Coverage Pattern: 180° PIR detection covers up to a maximum of 900 sq ft.
  • Finish: Light Almond color with a matte finish for a clean, low-profile appearance.

Technical Specifications

  • Color: Light Almond
  • Finish: Matte
  • Product Line: Pass & Seymour
  • Country of Origin: China
  • Packaging: 40 EA

Typical Applications

  • Commercial Office Lighting Control
  • Corridors and Common Areas
  • Classrooms and Conference Rooms
  • Retrofit Wall Switch Replacement
  • Energy-Efficient Lighting Upgrades

Why Pass & Seymour?

Pass & Seymour products are built for reliable, code-compliant performance in demanding commercial environments. The WS-250's dual-voltage 120/277 VAC design, broad electronic ballast compatibility, shallow low-profile housing, and durable matte Light Almond finish reflect the practical construction professionals expect from occupancy-based lighting controls. This combination of automatic detection, tactile manual override, and easy retrofit installation makes the WS-250 a dependable choice for keeping commercial lighting energy-efficient installation after installation.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
PASS-20260820
Product Type:
Sensor Switch
Product Finish:
Matte
Voltage Rating:
120/277 VAC
Product Color:
Light Almond
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Lighting Controls & Sensors

Pass & Seymour WS-250-LA – Frequently Asked Questions

1) Will the Pass & Seymour WS-250 occupancy sensor work on both 120V and 277V lighting circuits?
Yes. The WS-250 is a dual-voltage device rated 120/277 VAC, so the same part number works on a 120V branch circuit in a tenant office and a 277V circuit in a commercial corridor. Switching capacity changes with the voltage: 800W at 120V, 1200W at 277V. Size the load to the voltage you are actually wiring to, not the higher number.
2) Can the WS-250 sensor replace an existing single wall switch in a standard box?
That is what it is built for. The WS-250 replaces an existing wall switch and sits behind a standard decorator wall plate, and the back housing is only about 1 inch deep with flying leads, so it fits boxes that would be too shallow for a bulkier sensor. Note the leads: you are splicing with wire nuts, not landing wires on screw terminals.
3) How much floor area does a WS-250 wall switch sensor actually cover?
The PIR lens gives 180 degree coverage out to a maximum of 900 sq ft. That suits a private office, a classroom, a conference room, or a corridor run where the sensor looks out from one wall. For a larger open space, or any room where occupants are hidden behind partitions or casework, one wall switch sensor at the door will not see the whole floor area and you want a ceiling-mounted sensor or more than one device.
4) What is the closest equivalent to the Pass & Seymour WS-250 from another brand?
The Leviton PIR Commercial Grade Occupancy Sensor ODS10-ID is the nearest match. Like the WS-250, it is a PIR occupancy sensor rated 120/277V AC, so it drops onto the same dual-voltage commercial lighting circuits. The WS-250 is rated 800W at 120V or 1200W at 277V with 180 degree coverage up to 900 sq ft and is furnished in Light Almond with a matte finish; the Leviton ODS10-ID is a commercial grade device. Confirm wall plate color matching before you swap, since the two are catalogued in different colors.
5) I need more coverage than 900 square feet in one room - what wall switch sensor should I use instead of the WS-250?
Step up to the Leviton ODS10-ID-E, a PIR commercial grade occupancy sensor rated for 2100 sq ft at 120/277V. The Pass & Seymour WS-250 covers 180 degrees up to a maximum of 900 sq ft, so a large open office or wide classroom can leave dead zones at the far corners. The Leviton ODS10-ID-E is catalogued in black, so plan the wall plate accordingly against the WS-250's Light Almond.
6) Will the Lithonia CM-9 work as a replacement for the Pass & Seymour WS-250?
No - they are not interchangeable. The Lithonia CM-9 is a PIR low voltage occupancy sensor switch operating at 12-24V AC/DC, so it requires a low voltage control system or power pack to switch a lighting load. The Pass & Seymour WS-250 is a line voltage wall switch sensor rated 120/277 VAC that switches the load directly and wires in place of an existing wall switch. If your box has line voltage at the switch, the WS-250 is the correct family; if the job is built around a low voltage control scheme, the CM-9 is.
7) Does the WS-250 sensor work with electronic ballasts and can I still turn the lights off by hand?
Compatible with all electronic ballasts, which is why it drops into fluorescent retrofits without a separate relay pack. The integrated button gives a positive tactile click for manual override, so occupants can switch the lights by hand instead of waiting on the sensor.
8) Will the WS-250 keep lights off during the day when there is enough daylight?
Yes. A built-in light level sensor factors ambient light into the switching decision, so the sensor can hold the lights off when a daylit room is already bright enough and still occupied. That is the difference between this and a plain occupancy-only switch, and it is usually what a facility needs to meet an energy upgrade goal in perimeter offices and classrooms.
9) What are my alternatives if 900 sq ft of coverage is not enough for the room?
For a larger space, the Leviton ODS10-ID-E PIR commercial grade sensor is listed at 2100 sq ft on 120/277V, so it covers substantially more area than the 900 sq ft maximum of the WS-250. Leviton's ODS15-IDW is a self-adaptive commercial grade PIR if you want the sensor to tune its own timing. Both are line voltage devices like the WS-250.
10) Is the WS-250 a low voltage sensor that needs a separate power pack?
No. The WS-250 switches the lighting load directly at line voltage, 120 or 277 VAC, with no power pack or relay required. If your control design is low voltage instead, the Lithonia CM-9 is a 12-24V AC/DC PIR sensor switch, and the Lithonia CMR-9 is a PIR sensor with a relay. Those are different wiring architectures, so pick one and stay with it on the job.
11) Will a PIR wall switch sensor like the WS-250 see someone sitting still at a desk?
Passive infrared detects heat movement within its line of sight, so the WS-250 needs an unobstructed view of the occupant. In a private office or conference room it should be aimed so the 180 degree pattern covers the seating, not just the doorway. Where occupants are behind tall partitions, in a restroom stall layout, or otherwise out of line of sight, a wall switch PIR is the wrong choice and a ceiling sensor with full-room coverage is the better fit.
12) My lighting load is bigger than the WS-250 can switch - what sensor handles it?
Look at the Lithonia CMR-9 PIR occupancy sensor with relay. Because the switching is done through a relay rather than at the sensor itself, the load is handled downstream of the detector. The Pass & Seymour WS-250 switches the load directly and is rated 800W at 120V or 1200W at 277V, which caps what a single device can carry. For a bank of fixtures beyond that, a relay-based control such as the CMR-9 is the right architecture.
13) Is there an occupancy sensor that adjusts its own time delay instead of being set manually like the WS-250?
The Leviton ODS15-IDW is a PIR self-adaptive commercial grade occupancy sensor, meaning it adjusts its behavior to the usage pattern of the space rather than holding a fixed setting. The Pass & Seymour WS-250 pairs occupancy detection with a built-in light level sensor so ambient daylight factors into the switching decision, plus a tactile override button for manual control. For restrooms and corridors with unpredictable dwell times, the self-adaptive Leviton is worth a look; for daylit offices where you want lights held off during bright hours, the WS-250's light level sensing is the differentiator.
14) How does the Leviton ODC Series line voltage sensor differ from the Pass & Seymour WS-250?
Both are line voltage PIR occupancy sensors for commercial spaces. The Leviton ODC Series ODC0S-I1W is a commercial grade line voltage occupancy sensor. The Pass & Seymour WS-250 is specifically a wall switch form factor: it replaces an existing wall switch, sits behind a standard decorator wall plate, and uses a shallow 1-inch back housing with flying leads, giving 180 degrees of coverage to 900 sq ft at 120/277 VAC. If the device must land in the switch box and look like a switch, the WS-250 is the one spec'd for that position.
15) What color is the WS-250 and will it match the other devices on my walls?
Light Almond with a matte finish. It takes a standard decorator (Decora style) wall plate, so it lines up with other decorator switches and receptacles on the same gang. If your building is standardized on white or ivory devices, the Light Almond body will read as a different color behind the plate.
16) Is this sold individually or by the case for a multi-building rollout?
The WS-250-LA is packaged 40 each, which is how it is normally bought for a floor or building-wide retrofit where every switch location gets the same device. One part number covers both 120V and 277V areas, so a standardizing MRO or property buyer does not have to split the order by voltage.
How fast can I get the Pass & Seymour WS-250-LA delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Pass & Seymour WS-250-LA come with a warranty?
Absolutely. The Pass & Seymour WS-250-LA is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Pass & Seymour WS-250-LA?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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