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The Business Lighting Experts

Wattstopper WS-301-W Passive Infrared Wall Switch Occupancy Sensor

SKU: WS-301-W | Ordering Code: WS-301-W  | UPC: 754182935383

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Wattstopper's WS-301-W passive infrared wall switch occupancy sensor turns lighting or fan loads on and off based on occupancy and ambient light level. The sensor replaces existing wall switches and fits behind a standard decorator wall plate. Ideal for offices, conference rooms, break rooms and utility rooms.

To be installed by a licensed electrician.

  • 180° coverage, maximum of 900 sq. ft.
  • Shallow 1" black housing and flying leads for easy installation
  • Built-in light level sensor
  • Response time: 30 seconds to 30 minutes
  • Adjustable sensitivity from 20% to 100%
  • 120VAC or 240/277VAC
  • Load rating at 120VAC, 0-1000W ballast, LED, tungsten, 1/6 hp or at 240/277VAC, 0-1200W ballast, LED, tungsten, 1/6 hp
  • Adjustable light level setting of 10 to 200 footcandles 
Full Specs



Product Line


Model Number


Line Voltage

Operating Temperature (°F)
The ambient temperature in which the product can safely operate.
32 to 104
Width (in)
For fixtures and ballasts, width is the measurement of the total horizontal distance from left to right of the product in inches.
Height (in)
For ballasts and fixtures, height is the measurement of total vertical distance from the top of the product to the bottom expressed in inches.
Depth (in)
For fixtures and ballasts, depth is the measurement of total distance from front to back of the product in inches.
The decorative finish of the item.

Range of Motion (degrees)



5 year limited
Maximum Load (Watts)
The maximum power that a product can handle.
Also known as load type, the bulb technology that a control can work with, such as LED, Fluorescent, CFL, Incandescent.

Switch Mechanism

Switch Function
The capability for controling lighting from one or more location. Single pole switches can be used for one location, 3-Way for two, and wireless controls might control multiple locations.
Single Pole/3-Way
Load Rating (Volts)
The voltage range that a control can handle.

Wallplate Included

Coverage Area (sq ft)
Maximum amount of space in squre feed that this unit is capable of effectively covering.