HDMI cables are OK for short distances but when you need to send an HDMI signal over a long distance it's often better to use an HDMI over CAT extender that uses CAT5e or CAT6 cable. A transmitter on one end converts the HDMI signal and sends it over the network CAT cable to the receiver.
HDMI extenders using CAT5e or CAT6 break the limit of normal HDMI cables and can reach over 120 meters or 390 feet with quality CAT6 or better cables.
HDMI over CAT5E or CAT6 with KVM
Some HDMI over CAT extenders have USB connections to allow a keyboard and mouse to be connected at the receiver end. The keyboard and mouse control then goes back through the CAT cable to the transmitter. This is perfect for computers, DVRs or NVRs that are situated remotely.
HDMI over CAT Extenders with IR
Some HDMI over CAT extenders have IR pass back which means an infrared signal can be sent back from the receiver unit to the transmitter. An IR receiver picks up the IR signal from a remote control and an IR emitter is used to control the source's infrared.
HDBaseT HDMI Baluns
Special HDMI baluns that use a technology called HDBaseT can send HDMI audio and video over CAT5e or CAT6 cable through a network switch. It can be part of the existing network or its own standalone confguration. This allows one to many distribution in meeting rooms, bars, conference rooms and the like.
