Waterproof IP Camera Built-in 3G wireless network module (CDMA2000/TD-SCDMA/WCDMA optional) IR distance: 50m 3G Outdoor Waterproof IP Camera Main features ... slots, support alarm linkage.12. RS485 serial port, built-in every decoder protocol, support transparent transmitting protocol(only receive, ... , support NTP.16. Auto reconnection in network breakdown.17. Support TCP/IP,HTTP,TCP,ICMP,UDP,ARP, IGMP ...