The Atlona AT-DVI250SR DVI with RS232 and Analog Audio Extender is a twisted pair transmitter and receiver modules for computer video graphics (DVI), stereo audio and RS-232 data signals. The Atlona AT-DVI250SR DVI with RS232 and Analog Audio Extender unit converts DVI, Audio, and RS-232 inputs to a twisted pair signal (Cat5/6/7), and the receiver module converts the twisted pair signal back into the DVI, Audio and RS-232 data signals. The Atlona AT-DVI250SR DVI with RS232 and Analog Audio Extender is capable of extending signals up to 825ft and still maintaining very high video resolutions up to 1920x1200.