... parameter settings, preview, download video data 4/8/16 channel Linux system DVRH.264 double stream, advanced and ... systemsLINUXSystems sesourceMultichannel record,palyback,web,USB backup simultaneouslyInterfaceGUI16 bits full color GUI,Support MouseDiplay1/4 ch1/4/ ... 8 ch1/4/8/9/16 chLanguageEnglish, Simplified Chinese, Traditional Chinese, Italian, Spanish, Japanese ...