4-way signal amplifier

4 Channel Signal Distributor
DMX512 input
1 thru output  without  isolated,4  split 
output  with  optical  isolated  optical 
isolated＞1000V
Power supply: AC220V,50-60Hz
Size: 
1-4A:480×120×45mm       F4:300×90×260mm       
1-4B:300×90×260mm
Packing  size:
1-4A:500×160×91mm       F4:310×135×300mm      
1-4B:310×135×300mm
1-4A:2.5kg           3.3kg
F4:2.3kg                3.1kg  
1-4B:2.3kg               3.1kg