The SmartAVI XT-TX400S UXGA Video and Audio Extender Transmitter is a Cat-5 transmitter balun designed to extend VGA, SVGA, XGA, UXGA, RGBHV / RGsB compatible video and analog audio signal up to 1000' away from the CPU. The XT-TX400S features 4 separate zones and allows output signals to be isolated in up to 4 separate locations. The transmitter requires an XTA-RXS Receiver Balun to complete the extension between the CPU and monitor. The signal is sent between the transmitter and receiver via standard Cat-5 cable.