... Audio,Alarm,VGA,USB,remote control,internet Surveillance system 4CH H.264 Stand alone network DVR Features: 1.Second-generation video compression ... the same time support the operation of recording, playback, network transmission, backup, mobile control and interface operation 3.Two ... , Russian, French, Spanish, 26 etc.8. Plug and Play external network access, do not need to apply for any DDNS domain ...