Patent ID: 7411489

Claim:
A system for sensing the occupancy of an area, able to activate upon sensing occupancy of the area, maintain activation when sensing continuing occupancy of the area, and enable self-adjusting of settings thereof, comprising: an occupancy sensor, able to activate upon sensing the occupancy of the area, to maintain activation when sensing continuing occupancy of the area, to include settings therefor, and to enable self-adjusting of the settings, comprising an infrared sensor section, able to passively sense occupancy of the area, and to activate a signal thereupon, to continue to activate the signal upon sensing the continuing occupancy of the area, to include settings therefor, and to enable separate processing of the settings for only the infrared sensor section, and an ultrasonic sensor section, able to actively sense the occupancy of the area, to activate a signal upon sensing the continuing occupancy of the area, to include settings therefor, and to enable separate processing of the settings for only the ultrasonic sensor section, wherein the occupancy sensor is able to activate when the infrared sensor section senses occupancy of the area, and to maintain activation when either the infrared sensor section or the ultrasonic sensor section senses continuing occupancy of the area, and the signals in the infrared sensor section and the ultrasonic sensor section are each independently activated and form independent signals.