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Wattstopper PIR Wall Switch Occupancy Sensor, 120/277V, Black, WS-301-B

$78.00

$51.98

Product dimensions

  • Width:

    1.75 IN

  • Height:

    1.7 IN

  • Depth:

    4.1 IN

  • Weight:

    0.2 LBS

The WS-301 Passive Infrared (PIR) Wall Switch 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.


  • Zero crossing circuitry reduces stress on the relay and results in increased sensor life
  • 180° coverage; maximum of 900 ft2
  • Adjustable time delay and sensitivity
  • Custom two-tier Fresnel lens enhances detection at the desktop level
  • Light level sensor holds lights off when ambient lighting is above the preset level
  • Patented voltage drop protection
  • Defaults to Manual-ON operation for maximum energy savings
  • 180° coverage; maximum of 900 sq ft
  • Shallow (1-inch) back housing and flying leads for easy installation
  • Optional neutral connection with break off tab to expose neutral terminals
  • Built-in light level sensor
Brand Wattstopper
Color Black
Product Series WS-301
Features Adjustable Time Delay; Indicator Lights; Light Level Sensor; Sensitivity Adjustment
Switch Type Motion Sensor
Installation Location Wall
Included Mounting Screws; Sensor Mask
Application Sector Commercial
Standard UL; cUL; Complies with 2017 NEC requirements
Type Sensor; Switch

Product dimensions

  • Width:

    1.75 IN

  • Height:

    1.7 IN

  • Depth:

    4.1 IN

  • Weight:

    0.2 LBS

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