... register and multiple free DDNS (oray , 3322, dyndns, no-IP, etc )Product typeIP Cameracompany modelZK-ND0172HBSystemVideo resolution720PImage sensor1/3” CMOS ... typesCS audioCompressed formatG.711NetEthernet10/ 100 Base-T RJ45Network protocolHTTP, TCP/ IP, UDP, SMTP, FTP, PPPoE, DHCP, DDNS, NTP, UPnP, 3GPP, ... 's dual_core 1.66GSystem memory1024MBVideo card memory128MB Vandalproof dome ip camera