IR repeater system allows you to control the home theater components located behind the cabinet doors 1.Use an existing IR remote control to operate hidden audio video components, frequency ranging from 20Khz to 60Khz2.With 4-ports IR distribution Hub, Can control up to 8 AV components3.Hidden IR repeater Hub,with IR receiver4.Five(5) Dual Output Emitters with 2m & 4m cord and mini-plug ...