... output 5.2 CH Audio intput 3G Real time 4ch H.264 Standalone DVR RecorderZS-3504HS ItemSpecificationsModel ... backup, network monitoring and mobile phone monitoring),work full-time operation of sixVideo input4channels,BNC Video output1channel VGA,1 ... totalNetworkTCPIP//DHCP/DNNS/PPPOENetwork function· Support IE browse, Real time Internet watch, Internet DVR PreferencesSet ,alarm triggered ,emailMobile ...