E810-DTU(4RS1E) four serial port server of RS422 & RS485 & RS232 to Ethernet [Network protocols]:IP, TCP/UDP, ARP, IPV4 [Working voltage]:DC 8~28V [Product size]:172*107*29mm [Interface]:Ethernet [Transmission]:RS485 RS232 RS422 [Weight]:416±5g [Introduction]:E810 (4RS1E)...