We have a choice of HDMI Cat5 extenders to fit your specific needs.
The basic wall plates extend the HDMI signal over Cat5 or Cat6 cable without any amplification and work well up to about 20m. These are intended as a cheaper alternative to longer (10-20m) HDMI cables.
The mid range wall plates provide signal amplification with built in equalisation which allows the HDMI signal to be transmitted over longer distances than would normally be possible using a cable alone.
The high performance wall plates extend the signal range even further and include an infrared sensor and transmitter to allow your remote control to work from another room. They have external power supply that can be hidden in the wall with extra power terminals on the back of the unit.