MWOS 180 Degree Dual Technology In Wall Occupancy/Vacancy Motion Sensor Wall SwitchThe Enerlites MWOS is a dual technology motion sensor wall switch that operates lights using a combination of passive infrared (PIR) and ultrasonic technologies. The motion sensor features a 180 field of view to provide up to 1200 square feet of PIR coverage area and up to 400 square feet of ultrasonic 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