Features: E27 Screw Base Compatibility: Designed to fit standard E27 lamp sockets, ensuring broad compatibility with common light fixtures. Wire-Free Installation: No complicated wiring required; simply screw it into an existing E27 socket for instantS use. Human Motion Sensor (PIR): Automatically detects human movement, turning the light on only when pre-sence is detected. Effortless Plug-and-Play Setup: Quick and easy to install, transforming any E27 socket into a smart, sensor-enabled light in seconds. Energy Efficient Operation: Reduces electricity consumption by ensuring lights are only active when needed, leading to lower utility bills. Versatile Application: Ideal for hallways, staircases, closets, basements, garages, bathrooms, and other areas requiring automated-lighting. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Size: As picture show Package List: 1/2/3PCS Smart LED Lamp Bulb Holder