High video quality based on H.264 USB port connect thumb Drive Compact size&light weight ItemParameterDescriptionSystemLanguageChinse Simplified/Chinese Traditional/English/JapaneseInterfaceGraphical User InterfaceSecurityAdministor and user password protectedVideoVideo Input1/2/4 channel video input, 1.0V, p-p,75Ω,BNCVideo Output1 channel vidoe output, 1.0V, p-p,75Ω,BNCDisplay1/2/4 channel ...