IR repeater system allows you to control the home theater components located behind the cabinet doors 1.Use an existing IR remote control to ... components, frequency ranging from 20Khz to 60Khz2.With 4-ports IR distribution Hub, Can control up to 8 AV components3.Hidden ... , and 4-pin DIN connector Plug-in Power Supply Hidden IR repeater system, IR extender, Infred receiver, Infrared emitter, Blink eyes