Extend HDMI over copper cables and keep sources and displays in sync. The Gefen Booster for HDMI with EDID Detective extends HDMI up to150 feet (45 meters) at 1080p Full HD and up to 115 feet (35 meters)at 4K x 2K Ultra HD resolution, using standard copper HDMI cables. HDTV and Ultra HD displays use EDID (Extended Display Identification Data) to ensure that a connected Hi-Def source sends compatible audio and video signals. In some scenarios, this data can be lost, resulting in an incorrect signal or complete loss of audio and/or video. With DDC re-clocking technology, the reliability of HDCP handshaking is improved, ensuring that the Hi-Def source always receives the correct EDID. The booster-detective has been designed for quick and easy programming and installation.