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Adjustable Feature Access for a Controlled Environmental System

  • US 20090089886A1
  • Filed: 10/02/2007
  • Published: 04/02/2009
  • Est. Priority Date: 10/02/2007
  • Status: Active Grant
First Claim
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1. A method for restricting access to a control unit in an environmental system, comprisingidentifying a selected lock level from a plurality of supported lock levels;

  • configuring the control unit with the selected lock level, wherein only one lock level is activated at a time instance;

    when the selected lock level equals a first lock level, enabling a first set of features; and

    when the selected lock level equals a second lock level, enabling a second set of features.

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