roduct Parameters Product Model Single&dual and full color/Syn-asynchronous control system Control Range 640*128( 4scan/ card) 384*256( 16scan/ card) 1024*256(single&dual color synchronous/ card) On-board Interface 8*HUB75E Grey Level 2~65536 Refresh Rate Max 4KHz~16KHz Serial Frequency 1MHz~31.25MHz Data Group 16group full-color signal Concatenation 256pcs Memory 4GB/8GB/16GB Temperature -40℃- 85℃ Features Support all modules of single&dual and full color, one key to choose various settings； Support syn-asynchronous dual mode, one key to switch； Support any concatenation； High capacity storage including 4GB/8GB/16GB/； Built-in colorful background and words; Support 1/32scan, compatible with mainstream high refresh chip； Sending speed 2.5 times faster, word left shift effect promote 5 times； Support video processing and scaling, sell-define copy area；