Features: Strong Signal: Utilizes radio frequency technology to penetrate walls, floors, and doors, allowing you to control the receiver from anywhere within a reliable range. Easy to Use, Flexible, and Freely Combinable: Can reach up to 50 meters without obstructions. Create a Multi-Control System: Can learn multiple remote controls. Each button on each remote can be learned. One remote can control multiple switches, or multiple remotes can control switches. Easy Installation: No need to wire switches, tear down walls, or quickly change existing switch positions. No modifications needed. For All Types of Lamps: Suitable for incandescent, LED, CFL, fluorescent, and other types of lamps. Specifications: Length: Approx. 97 mm / 3.81 inches Working Voltage: AC85V-260V Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 Set of Remote Control