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  • Coverage Major motion 35' x 30', Minor motion 20' x 15'
  • Color: Black
  • Voltage 120-277V
  • Usually Ships 1-2 Weeks



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The WS-250 Passive Infrared (PIR) Wall Switch Sensor turns lighting on and off based on
occupancy and ambient light level. It replaces
existing wall switches and fits behind a standard
decorator wall plate. The WS-250 improves on
the WS-200, featuring a shallower housing, flying leads and new control button.


  • ASIC technology reduces components andenhances reliability; includes proprietary chip designed by WattStopper
  • Pulse Count Processing eliminates false offs without reducing sensitivity
  • Detection Signature Processing eliminates false triggers; provides immunity to RFI and EMI
  • Zero crossing circuitry reduces stress on the relay and results in increased sensor life
  • Time delay adjustment from 30 seconds up to 30 minutes
  • Adjustable unit sensitivity from 20% to 100%
  • Light level sensor holds lights off when ambient lighting is above the preset level
  • Custom two-tier Fresnel lens enhances detection at the desktop level
  • Sensor coverage tested to NEMA Guide
    Publication WD 7-2000
  • Patented voltage drop protection
  • For safety, there is no leakage to load in the off mode and sensor is safety grounded
  • LED indicates occupancy detection
  • Compatible with decorator wall plates
  • Qualifies for ARRA-funded public works projects

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