GLW 20w Led Motion Sensor Flood Light, 1500lm PIR Indoor Security Floodlight 3000k Warm White, Basement Light, 150w Halogen Bulb Equivalent [Upgraded Version] PIR (passive infra-red) motion detector is used to sense movement of people, animals, or other objects. They are can be used in automatically-activated lighting systems 20W 1500lm led Replace 150W halogen bulb. Save 80% on electricity bill of lighting Extremely 50000 hours long life, Smart motion detctor option day or night Come with a yoke-style arm, can be mounted vertically or horizontally, easy for adjusting the beam angle Widly used in lighting up your garden, garage, underground, Basement, warehouse