Knoll Systems U-HDMI HDMI Balun Send/Receive Unit Pack Complete pack of box-type senders/receivers & 12-channel amp Requires 2 CAT-5 wires Max wire length-80ft for 1080p, 150ft for 480i/p, 720p & 1080i Supports HDMI 1.3b at 340MHz Complete Pack Of Box-Type Senders/Receivers & 12-Channel Amplifier Requires 2 Cat-5 Wires Maximum Wire Length-80 Ft For 1080P, 150 Ft For 480I/P, 720P & 1080I Rated 1.3B 340 Mhz