MOTION SENSOR and LIGHT SENSOR With passive infrared technology (PIR), it detects human motion. Automatically turns on in the dark. The motion sensor closet lights is auto-on within 16 feet, auto-off after 20 seconds with no motion. To save battery life, these smart lights won't turn on if there's already light in the area. SUPER BRIGHT and SOFT LIGHTING Up to 60 lumen output, 6 pcs super bright 0.5W SMD 2835 LED with 90Ra. These cordless motion sensor under cabinet lights provide enough light to make sure you never stumble in the dark. Adopt advanced anti-glare panel, provide soft light to protect your eyes, better for kids and elders. BATTERY OPERATED and EASY INSTALLATION With customized super strong adhesive tape, stick on anywhere you want, no hard-wiring. These night step lights are powered by 3 AAA batteries (not included). Light does not switch on if there's enough light in the area. This saves battery life for a long time. PORTABLE DESIGN and WIDE APPLICATIONCompact and portable size makes these motion sensor puck lights ideal for anywhere you need extra light to stick on like kitchen, bedroom, hallway, stairs, basement, attic, garage, laundry area, under cabinet, closet, cupboard, drawer, safe box, mailbox, etc.