The Wireless Motion Sensing Step Light mounts anywhere (no wiring required), glows all night and emits bright light when motion is detected. And since it is weatherproof, it can be used for lighting indoors and outside, including stairs, hallways, bathrooms, pathways and decks. Weatherproof Design: Mount the Motion-Sensor Stair Light outside or inside. Motion sensing lighting is perfect for lighting stairs, hallways, decks, patios, walkways, porches and entrances/exits. Perfect for the bathroom or as a children’s room nightlight. Uses two energy-efficient bright white LED. Requires 1 x 6F22 Battery (not supplied). Product dimensions: 5 x 10.8 x 12.5 cm.