The DWOS-1277-NL is a motion sensor wall switch that operates lights using passive infrared (PIR) technology. This wall switch includes a built-in night light that automatically turns ON when the room is dark. The motion sensor features a 180° field of view to provide up to 1200 sq.ft. of coverage area. The sensor has 2 modes and operates lights ON/OFF based on occupancy or vacancy in the area. In occupancy mode, lights turn ON automatically when motion is detected, and turn OFF after no motion has been detected for the pre-selected time delay. In vacancy mode, lights must be turned ON manually, and then will turn OFF automatically after no motion has been detected for the pre-selected time delay. The motion sensor's time delay can easily be adjusted from 15 seconds to 30 minutes. The device also includes a manual ON/OFF button. This switch is for single pole use only and it is compatible with incandescent, fluorescent, and LED lights. A neutral wire is required for installation.