Product Description Built-in PIR infrared motion sensor, when it detects movement within 8 meters in a dark environment, the LED ceiling light will turn on immediately. After 20 seconds, when no motion is detected, it will automatically turn off, saving battery life. 【Two Modes】 There is a switch near the motion sensor, slide the switch to turn the photoelectric sensor on/off. When it is open, it is not bright during the day and bright at night; when it is closed, it is bright all day. 【Battery Powered Motion Sensor】 Powered by 4 alkaline D batteries (batteries not included), it can illuminate an area of 30 square meters. The battery provides up to 12 months of lighting with an average of 6 to 8 uses per day. 【Super Bright LED Light】 Built-in 80 pieces of bright and durable SMD2835LED. It can spread in all directions and has up to 300 lumens of brightness to ensure you don't stumble in the dark and protect your loved ones and children from the horrors of darkness at home. 【Easy Installation and Wide Application】 No wiring required, quick and easy installation in 5 minutes. Perfect for your bedroom, bathroom, stairs, hallway, workshop, basement, garage entrance, ceiling, doorway. It can prevent lights from turning on unnecessarily and increasing your electricity bill. Specification 1. Sensitivity: approx. 8 meters 2. Sensor range: approx. 120 degrees 3. Number of LEDs: 80 LEDs 4. Light color: warm yellow 5. Delay time: 20S 6. LED life: 50,000 hours 7. Product size: 19 x 19 x 6.5 cm 8. Material: ABS 10. Battery required: 4 D batteries (not included) Installation instructions: 1. Rotate the product's back plate clockwise 2. The mounting cover on the back can be easily lifted and the back can be rotated clockwise to open 3. Use the included mounting hardware to mount the back plate to the wall, ceiling or wherever you want 4. Insert the battery into the lamp's battery compartment 5. Replace the back cover, rotate the lamp body clockwise, press the mounting cover and rotate the lamp body clockwise to securely fix the back cover Package contents 1 x Motion sensor ceiling light 1 x Mounting cover 1 x User manual 4 x Screw sockets