Sensing distance: 3-8m Size: 9.5*6.2cm/3.7*2.4 inches 1. Convenient and labor-saving: The E27 bulb holder adapter allows you to install easily, and is equipped with a radar motion sensor, which is more convenient to use. 2. Energy saving and environmental protection: The radar motion sensor can intelligently sense light to avoid the bulb being on for a long time when no one is around, which is energy-saving and environmentally friendly. 3. High sensitivity: Equipped with advanced radar technology, it is sensitive to human motion and switches the light on and off in time. 4. Multi-functional application: It is suitable for various E27 standard bulbs and can be widely used in homes, offices, outdoor places and other places. 5. High quality guarantee: Made of high-quality materials, reliable, it ensures long-term stable operation.