1.compression:H.264 2.One output 3.185 x 75 x53mm (L*W*H) 4.Image sensor:1/3inch ... video by SD card /messages alarm(coordinate to server).; Support 4 visitors viewing on line at the same ... (such as IOS,Android OS,Symbian OS,WindowsPhone7) Support Mac and windows pc; Internet Explorer 6.0 ... mNetworkSocketRJ-45 10/100Mb self-adaptable Ethernet slotProtocolTCP/IP,HTTP,TCP,ICMP,UDP,ARP, IGMP,SMTP,FTP ...