Description: The remote control adopts the learning EV1527 encoding method, and each remote controller has an independent address code to prevent serial codes and interfere with each other. Made of high quality glass, safer and more stylish. No wiring is required, you can place any position in the room and give a strong sticker to the wall. The remote control uses a 433MHz wireless RF chip that can pass through the wall and the signal can be recognized by the receiver through the wall. Specification: Transmission format: 1527 encoding format Frequency: 433MHz Diameter: 50mm/1.97inch Thickness: 12mm/0.47inch Package Includes: 1 Piece Switch Note: This product is a transmitter and cannot be used separately. It needs to be equipped with a receiving controller.