This video shows how to extend an HDMI video signal over water using the HL24 extender. Ok, the water thing is more of a "gimmick" as Derek says (Derek is the guy on the video) But basically any 2 wires can be used with the HL24 to extend the HDMI signal up to about 2 miles!!! We had a hard time believing those specs so we tested it on our own warehouse (video coming soon? maybe?)
Let us know in the comments what you would use this for.