These 3D LED Wireless Motion Sensor Flood Lights use new LED technology to provide safe bright light anywhere you need it without connecting any wires. The light uses 3 D cell alkaline batteries (not included) and will run for more than 1 year without changing batteries (based on average use). The Wireless LED Flood Light uses a sophisticated motion sensor coupled with a photo sensor. The Flood Light will only turn on when it is dark and only when motion is detected. The light automatically turns itself off . The LED Flood Light comes complete with a 4-way swivel mounting bracket and hardware for easy installation. The 3D Wireless Motion Sensor LED Flood Light is a perfect light for any garage, patio, yard building, barn, or walkway.