75642703
Feb 18, 1999
Dec 26, 2000
Powerline carrier system comprising a radio-frequency, or "RF", transmitter and one or more associated RF receivers for control of electrical equipment within residential buildings, commercial retail/office space, commercial and governmental industrial facilities, and campuses; for use in conjunction with specialized power demand controller equipment or used as a stand-alone unit for transmitting on/off commands over a powerline for energy management, HVAC and general electrical control applications
Electrical and Scientific Apparatus