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System for supplying communications and power to a thermostat over a two-wire system

  • US 7,841,542 B1
  • Filed: 11/07/2006
  • Issued: 11/30/2010
  • Est. Priority Date: 11/07/2006
  • Status: Active Grant
First Claim
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1. A system for supplying operational power to and receiving data from a thermostat, comprising:

  • a controller unit, said controller unit supplying operational DC-power to said thermostat and including a first microprocessor,said thermostat being connected for receiving the operational DC-power from said controller unit,said thermostat including a second microprocessor operably connected for supplying data to said controller unit by interrupting the operational DC-power supplied from said controller unit, andsaid thermostat supplying data from the second microprocessor to said controller unit through interruptions in the operational DC-power that produce modulations at the thermostat which are demodulated at the controller unit and received at the first microprocessor.

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