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Bicolor indicator lamp for room occupancy sensor

  • US 6,166,640 A
  • Filed: 06/28/1999
  • Issued: 12/26/2000
  • Est. Priority Date: 06/28/1999
  • Status: Expired due to Fees
First Claim
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1. A method of operating an indicator device in a lighting control system, the lighting control system comprising a lighting fixture, a switching device for controllably switching the lighting fixture on and off in accordance with control signals from a controller, a motion detector for detecting motion, and a controller operable to switch the lighting fixture on when motion is detected and to switch the lighting fixture off when a selected period of time has elapsed following the last detected motion, the method comprising the steps of:

  • providing a first indication via said indicator device when said lighting control system is in one of a bypass off mode and a bypass on mode, said lighting control system operating in a bypass off mode when said lighting fixture is not switched on after said motion is detected, said lighting control system operating in said bypass on mode when said lighting fixture is switched on even though motion is not detected; and

    providing a second indication via said indicator device when said lighting control system is in a time out mode, said lighting control system operating in a time out mode when said lighting fixture is switched off after said selected period of time has elapsed following the most recent occurrence of detected motion, said first indication and said second indication being different.

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