HXVB-108U is 8 channel rack-mounted high-definition AV signal passive UTP video balun which mainly used for security, education and other fields. It uses Cat5 or Cat5e as a transmission medium. It can real-time transmit 300 meters color or 600 meters black and white baseband video signal. its transmission distance will up to 1200m color signal or 1800m black and white signal if working with active receivers. it will save wiring costs, simplify your wiring works For more details on product, Please refer to http://www.papyrus.co.il/rack8passiveutpvideobalun.htm