Estone 12V Single Channel Fixed Encoding Wireless Remote Control Switch Control Lights, TVs, Motors, Fans, Cameras, Video signals, Audio signals, electrically operated Doors/ Locks/ Windows/ Blinds/ Cars You can turn on/off the receiver with transmitter (remote control) from any place within a reliable distance; The wireless signal can pass through walls, floors and doors. Reliable control: The transmitter (Encoding) and the receiver (Decoding) use an code. If you use two or more receivers in the same place, you can set them with different codes