Motion-activated light socket with built-in PIR sensor - The built-in PIR motion sensor detects movement and automatically turns the bulb on, and off when the area is empty, helping to reduce energy use. Easy retrofit for E27 bulbs - Compatible with all E27 screw-base lights. No extra equipment or wiring is required—simply install and convert an ordinary bulb into a sensor light. Adjustable lighting duration - Adjust how long the light stays on after motion to suit your space and needs, delivering the right amount of illumination and comfort. Direct installation on existing sockets - Screw-in design fits directly into your current bulb socket, making installation quick and hassle-free. Practical applications - Great for basements, garages, wardrobes/closets, storage rooms, stairs, porches, and other areas where hands-free, motion-activated lighting improves safety and convenience.