... way: Usb Mouse,Remote IR Control PTZ protocol:1*RS485 Support multi kinds of protocol 3G Mobile Surveillance: IPhone/iPad,Android,BlackBerry ... security camera systemSupport PTZ with RS485, USB, Mouse, R/C. Protocol: TCP/IP, UDP,HTTP,LAN,DHCP, DDNS, DNS, PPPoE, SMTP ... 1CH RCA Output 1CH RCA Talk back No Support Communication Protocol TCP/IP, UDP,HTTP,LAN,DHCP, DDNS, DNS, PPPoE, SMTP ...