No Wires or Installation Needed! This adjustable Motion Sensor Entry Light puts light exactly where you need it using 7 bright energy-saving LED lights. The motion sensor detects movement as you walk by and stays on for 30 seconds past the last movement detected. It can be mounted anywhere you need it. Use it at your Front Door, Porch, Closet, Hallway, Basement, Attic.Anywhere. Requires 3 "C" Batteries (not included). Light surface measures 3.5 x 5.5 inches and the open light with body measures 2.5 x 3.75 x 10.75 inches.