HDMI Transmitter and Receiver, Plug and Play Portable 2.4Ghz 5GHz HDMI Extender Kit for Streaming Video and Audio to Monitor TV ProjectorFUNCTION: transmission system supports dual modes of screen casting and same screen. The screen can be synchronized to the big screen in real time, can display the same screen, share what you see. The screen can extend the second screen. Can extend the current computer desktop, computer and TV screen, different from each other, set up an exclusive area for office and entertainment (this function requires computer and equipment support). LONG RANGE,