Master-slaver distribution, Super load capacity,More control functions,Electric isolation,170 m of distance 1,Master-slaver distribution: excellent adjustablity to various projects, easy to operate. 2.Super load capacity: compatible with high speed SD card(256M4G Byte). Maximun control pixels is 16384(equivalent 2048m of 8 segments digital tube). It can control 100,000 pixels by multi-master ...