2-Port IP68 Waterproof Serial Server with M12 connectors, EN50155 and EN50121-4 Railway certified 15KV ESD protection for serial signals 10/100 Mbps Fast Ethernet full duplex auto negotiation Support multiple link mode with TCP server/client, UDP and Virtual COM mode Monitor, manage and control industrial field devices remotely Configuration: Built-in Web Server /Serial Console/ Telnet Windows-based