Motion Sensor: Using Advanced sensing technology, automatically identifies human body. Automatically turn on and auto-off after about 5 seconds. Bright LED Bulbs: This light only activates in darkness, 4 LED bulbs is bright enough to make sure the keyhole can be seen at night without keeping the porch light on. For Anywhwre Use: This kind of small lamp offers ideal gentle light for the bedroom, baby room, closet, closets, cabinet, corridor, workshop, basement, garage, stairwell, oil depots, roof, door, drawer, trunk, garage entrances and other many places. Battery Operated: They are powered by 1 piece of AA batteries (not included), please make sure the batteries are right placed. Install Easily: Come with an adhesive sticker, it can be easily stuck on the door. Easily use and operate.