Patent ID: 8665090

Claim:
A load control system for controlling the amount of power delivered from an AC power source to an electrical load located in a space of a building, the load control system comprising: a sensor mounted to detect an occupancy condition or a vacancy condition in the space; and a load control device adapted to be coupled in series between the source and the load for controlling the amount of power delivered to the lighting load, the load control device responsive to the sensor to control the intensity of the lighting load; wherein the load control system operates as though the sensor is an occupancy sensor when the load control system is operating in a first mode of operation, defined for a first predetermined period of time, and as though the sensor is a vacancy sensor when the load control system is operating in a second mode of operation, defined for a second predetermined period of time, the load control system operable to automatically change between the first and second modes of operation in response to the present time of day.