Samyo PIR Motion Sensor LED Table Lamp Night Light Battery Powered (Round) Retro style design, Lightweight and portable, not dazzling glow, ideal for the bar, hotel rooms, dining table, or anywhere home use. Light up automatically in darkness when motion is detected, turns off automatically after 15 seconds. Detecting distance: About 10-16.4 Ft. Environment-friendly and practical design, It is notable for the Light sensor which can shut down the light at daytime by detecting ambient light. Three power modes: High/ Low/ Auto. Battery Operated: powered by 3 Pccs AA batteries (battery not included).