The TL-FO-HD replaces a traditional HDMI cable with active electronics designed specifically for sending audio and video signals up to 1,000 feet. Simply connect the TL-FO-HD transmitter to your source device (often a switcher, matrix, DVD player or cable box), connect the TL-FO-HD receiver to your destination device (often a display or projector), connect the two units with a fiber optic patch cord and connect the power supplies.