KLS4 supports four-channel HD video signal input, including DVI×2, HDMI×2，and support one audio input.

KSV4 integrates four road network ports, and the output supports 2.6 million pixels at most, 4096 pixels at most and 4096 pixels at most. Four ports can transmit audio signals synchronously.

With the data-read-back function, users can quickly get the correct configuration parameters from the receiving card when replacing the controller.

With the easy recovery function, when the user changes the receiving card, KLS4 can resend the configuration which stored in the device , so as to complete the system recovery without reconfiguring the parameters.

KLS4 can store the project file information in advance. Users can complete the cabinet mapping of the LED screen according to the guidance through the navigation menu without a computer.