CTC ICR-4103-EU Supports multi-band connectivity with FDD 4G LTE/ TDD 4G LTE/ 3G WCDMA/2G GSM/ LTE Cat4 2 SIM card slots 4G LTE antenna, 1x WAN (10/100Base-TX) + 3x LAN (10/100Base-TX UTP), 2x DI + 1x DO, 3x Serial COM port (2x RS232, 1x RS485) Highly reliable and secure for mission-critical cellular communications Provide flexible options to configure LAN/ WAN ports Built-in dual SIM for network redundancy / failover/ roaming over/ back up Integrated dual detachable antenna against radio interference 4G LTE and WAN port for seamless connection and redundancy Supports 3x Serial port (1x RS485, 2x RS232) for IoT and automation application, Modbus RTU and Modbus/TCP gateway, MQTT Supports Routing/Firewall, NAT, Virtual Server, DMZ, Port filtering, MAC Filter, URL Filter, IP Filter, VLAN, Static Routing and RIP 1 & 2, VRRP, OSPF V2 & V3, BGP Supports VPN, OpenVPN, IPSec (3DES, AES128, AES196, AES256, MD5, SHA-1, SHA256), GRE, PPPTP, L2TP IPv6/IPv4 dual stack and all applications are IPv6 ready Supports DHCP server and client, PPPoE, Static IP, SNTP, DNS Proxy, DDNS, QoS, Virtual Com, UPnP Supports Alarm message : DO, SNMP Trap, E-mail Supports SNMP, TR069,Web, Telnet, CLI for management Supports dual Image firmware upgrade by Web CE, FCC, Rail Traffic EN50121-4 certified Safety EN60950-1 certified Radio RED ETSI EN301 489-1/-19/-52, EN301 908-1, EN303 413, NCC certified Heavy industrial grade EMS, EMI, EN61000-6-2, EN61000-6-4 certified Rugged metal, IP30 protection & Fanless design Wide operating temperature -20 ~ 75°C