... IP Filter,PPPOE,FTP,DNS,DDNS,NTP,UPNP,EMAIL,Alarm Server,ARSP,Wifi,3G.Support backup & upgrade with USB flash ... 1CH RCAHard DiskFlash drive/USB HDD/USB CD/Network download/DVR-RW(support build in DVD RW)Search ModeTime/Date,Alarm ... IP Filter,PPPOE,FTP,DNS,DDNS,NTP,UPNP,EMAIL,Alarm Server,ARSP,Wifi,3G IE Remote PreviewIE(need Manual Installation), NetView, ... .83KG(without HDD) Support Wifi and IR 8CH DVR