The HDMI-EC300 HDMI Extender extends up your video/audio transmission distance up to 100m (350 ft.) for 1080p over one CAT5. Supports resolutions up to 1080p Full HD. With Cat5 cable, users can readily extend HDTV sources from DVD players, Blu-ray Disc player, PC, and any other kinds of sources compliant with TMDS to distant display monitors or LCD PC monitors.The HDMI-EC300 comes with two units: an HDMI transmitting/sending unit and an HDMI receiving unit. The transmitting unit is used to capture the input HDMI signals and carry the signals through one RJ45 connector into Cat-5/5e/6 cable. The receiving unit is responsible for equalizing the transmitted HDMI signal.