Samyo Brushed Aluminum Energy Saving Light-operated Motion Sensor Activated LED Wall Sconce Hallway Night Light Battery Operated Elegant design, Energy saving and long working life. It is widely used in cabinet, corridor, stairs, closet, children's room, bedroom, bathroom and kitchen room. Motion Sensor: lights turn on when motion is detected, turns off automatically after 30 seconds. Detecting distance: Max 16.4 Ft. Three power modes: High/ Low/ Off. Battery Operated: powered by 4pcs AA batteries (battery not included). Simple installation. It can be mounted with included 3M double sided tape, or install it with screws.