... , DCD, GND RS422: Rx+, Rx-, Tx+, Tx- RS485: Data+, Data- Modem controls: DTR/DSR, DCD and RTS/CTS Network Protocols TCP ... , Telnet, DHCP, ICMP, HTTPEnbeddedNucleus ManagementSerial Console, Telnet Console, Web Management,Firmware Upgradeable LED PowerInput Voltage: 12VDC EnvironmentOperating Temperature: -40°C to ...