Splits one Cat (RJ45) control cable to 7 cameras via Home Run. Easy and clean setup from Marshall Controllers (VS-PTC-IP, VS-PTC-200) and others. Extends usable RS232 Cat cable runs for control of cameras to 100m from controller to RS7-HR box and another 100m to each of seven camera locations (200m total). Using RS422 its extends (300m + 300m for a total of 600m).