Patent ID: 7944086

Claim:
A system comprising: a sensor configured to determine whether a human is in the area of the sensor, said sensor providing a human-in-area signal when a human is determined to be in the area; a master power saving device configured for connection with a master load and configured to receive said human-in-area signal, said master power saving device configured to automatically determine when said master load is in an operating condition and a non-operating condition based on a load demand of the master load, and wherein said master power saving device provides non-continuous power to said master load when said master load is in a non-operating condition, wherein when said human-in-area signal is present, said power saving device employs a first strategy to make said determination of said operating condition of said master load and said power saving device employs a second strategy to make said determination of said operating condition of said master load when said signal is not received; and a slave power saving device configured for connection with a slave load, said slave power saving device configured to receive a master signal from said master power saving device to turn off said slave load when said master load is in said non-operating condition.