The WSD LV Series is a low voltage wall switch occupancy sensor that is stylish, easy to install, and simple to use. Ideal for private offices, copy rooms, closets, or any small enclosed space without obstructions, the WSD LV uses the industrys best Passive Infrared (PIR) technology to achieve excellent small motion detection up to 20 feet. A user programmable time delay ensures that once the room is vacated the sensor will time out and turn off the lights. WSD LV sensors also have additional On Modes and Switch Modes that are all fully programmable using the front push button. For rooms with obstructions the WSD PDT LV should be considered. The WSD LV offers a Vandal Resistant version for high abuse or public areas.