TOPGREENER TDOS5-J 2-in-1 Occupancy/Vacancy Motion Sensor Switch w/ wall plate, Single Pole,120/277 VAC, Ground Wire Required (Ivory) The 2-in-1 Occupancy / Vacancy Sensor allows you to set Manual ON / Auto OFF and Auto ON / Auto OFF Reliable AUTO ON / AUTO OFF performance with up to 1200 square feet coverage Works with all bulb types and great energy saving especially for closets, garage, offices, conference rooms, classrooms, hallways and stairways Single Pole, 180, 120/277VAC,Ground wire required, No Need of Neutral Wire After turning on circuit breaker, allows about 2 minutes to warm up before operating on the device