Switch / router
The main element for interconnectiong of the process stations and connecting them to the management station. Any commercially available 10/100 Mbit/s Ethernet switch is OK, in a more demanding environment it is recommended to use a industry-grade switch, such as MOXA, EDS range.
Standard Domat specification where always the latest proven solution of a well-known producer is supplied, is DC-NHUB.
Remember to install a 230 V network socket to power the switch in the panel where the switch shall be located.