... intercom communication;l Built in infrared for day and night monitoring;l Motion detection, alarm recording and event list;l Micro SDHC card ... for video recording and snapshot;l Smart phone live monitoring ... , IGMP,SMTP,FTP,DHCP,DNS,DDNS,NTP,UPNP,RTSP and etc.Wireless WIFI 802.11 b/gOnline usersMaximum 4 users visit online ...