Extend an hdmi video and audio over standard cat5 cabling with support for rs232 serial and infrared controlr r integrated bi directional rs232 and ir interfaces enable you to communicate with monitor and control your source audio video device from either end of the connectionr support for full 1080p resolution with accompanying digital audio which lets you display your content the way its meant to be seen and heardr benefits 3r r the st121utphd2 hdmi over cat5 extender kit can extend the