Providing convenience and energy savings, the Lutron LRF2-OWLB-P Radio Powr Savr Wireless Occupancy/Vacancy Sensor uses battery-powered passive infrared sensors (PIR) to detect body heat in 180º of coverage. Using Lutron's XCT technology, the Lutron wireless occupancy sensor can detect up 3000 sq. feet of major motion and 1500 sq. feet of minor motion, then relay information via RF communications to compatible dimmers and switching devices. This Lutron LRF2-OWLB-P occupancy version is able to automatically turn on and off lights
eBay