The Hdmi Ultra-Slim Hdbaset + Rs232 And Ir Over Cat Extender Box Receiver - 4K 60Hz Allows A 4K Hdmi Source To Be Extended Up To 130Ft To A 4K Display Using A Single Cat6A Ethernet Cable. This Is An Ideal Solution Where Hdmi Video And Audio Need To Be Extended To Displays In Conference Rooms, Classrooms, Lecture Halls, And Many Other Installation Needs That Are Far Beyond The Length Limitations Of Standard Hdmi Cabling.