specification: 1. Sensitivity: about 5-8 meters distance 2. Sensor range: about 120 degrees 3. Number of LEDs: 80 LED 4. Light color: white 5. Delay time: 20S 6. LED life: 50,000 hours 7. Size: 19 * 19 * 6.5cm / 7.5 * 7.5 * 2.6 inch 8. Material: ABS 9. Color: White 10. Battery required: 4 D-type batteries (not included) Installation Notes: 1. Turn the back plate of the lamp counterclockwise to open it. 2. Easily lift up the fixed plug on the back cover, and turn the lamp back cover clockwise to open. 3. Use the included mounting hardware to mount the backplane on a wall, ceiling, or anywhere you want. 4. Insert the battery into the battery container of the lamp 5. Turn the lamp body clockwise and fasten it with the back cover. Package Contents: 1 * induction ceiling light 1 * mounting kit (contains 4 pairs of screw sockets) 300 lumens: Super bright, 80 bright and long-life SMD2835 LEDs. It spreads well in all directions and covers a area, 300 square feet. The matte lampshade is designed to soften the light, and it doesn't make your eyes feel uncomfortable even if you suddenly wake up at night. Protect your lover and children from darkness and fear Motion-activated sensor light: built-in PIR infrared motion detector, 120-degree detection angle. The motion-activated LED ceiling light comes on immediately when motion is detected at a distance of 20 feet (approximately 50.8 meters). Easy to install and versatile: no wires required, quick and easy installation in 5 minutes. Wireless LED ceiling lights are perfect for lighting closets, coffee tables, stairwells, shed porches and storage rooms Upgrade daylight / night mode: Slide the switch to turn on / off the photoelectric sensor. In daylight mode, lights can be activated all day long, while night mode can only be activated at night. Humanized design, convenient for various house lighting Energy-saving battery-powered lights: 4 D-type batteries (not included) Our high-quality LEDs do not need to be replaced. Very efficient; with a battery, you than 6 months of light. Tips: We stick a blue film on the silver part to keep it clean. You can remove the blue protective film before use.