1,camera 2,Free domain name bounded 3,Two way audio 4,Support 10X optical zooming 5,Certified by Microsoft a Details: System securitySupports three-level account, password, user multi-level authority managementDDNS(free)Built in free DDNS systemIE multi-channel view client(free)No need to install software, support multi-channel monitor &management & check alarm picture via IECMSmulti-window ...