Patent ID: 8193713

Claim:
An apparatus, comprising: at least one primary general illumination lighting fixture which, when electrically connected with at least one primary general illumination lighting source, is configured to emit at least one primary general illumination lighting; at least one LED-based secondary general illumination lighting fixture that when electrically connected with at least one LED-based secondary general illumination lighting source is configured to emit at least one LED-based secondary general illumination lighting; at least one sensor configured to sense at least one sensed electric characteristic of the at least one primary general illumination lighting fixture or the at least one primary general illumination lighting source; and at least one general illumination lighting control circuit configured to control at least one controlled optical characteristic of the at least one LED-based secondary general illumination lighting at least partially responsive to the at least one sensed electric characteristic of the at least one primary general illumination lighting fixture or the at least one primary general illumination lighting source.