Leviton decora 180 Degree Motion Activated Light Control/Occupancy Sensor. Color = white. Automatically turns lights on when it detects a person entering a room and off when the room is unoccupied. Also includes manual on/off override so can be used as standard switch as needed. Replacing standard switches with occupancy sensors reduces energy consumption and extends bulb life. Ensure that lights are not left on unnecessarily for hours at a time. This uses "passive infrared technology" to detect human presence in a room. Single Pole or 3-way: Control lights from one location or two locations. Rated 500W incandescent lighting/400VA rapid start fluorescent ballasts. Indoor use only. 400 sq ft sensing area of coverage. Wallplate sold separately (Home Depot, Amazon, etc). New in unopened retail packaging. Retail price: $50 + tax.