SMAKN&reg; USR Serial dual-port RS232/485 to Ethernet TCP IP Converter, TCP Server, TCP Support TCP / IP protocols: TCP / UDP / ICMP / IPV4ARP / IGMP / PPPOE. Working protocol mode: UDP / TCP Server / TCP Client / Virtual com. Network Interface: 100M / 10Mbps, automatic matching, 1.5kv isolation protection. Baud Rate: 300bps - 1.8432Mbps. Working environment: temperature: -45  - + 85  ; Humidity: 5% -95%.