The Hirschmann Automation SPIDER-SL-44-05T1O69999TY9HHHH unmanaged Ethernet rail switch comes with a metal housing that makes it able to operate in harsh conditions. This switch and its terminal block are meant to be mounted in a DIN Rail and these devices also need to be grounded. The switch operates with 5 Ethernet ports and it can be adjusted to work with the twisted-pair, multimode, and single mode fiber networks.