943434010 Hirschmann RS20-0400M2T1SDAP Mananaged Industrial Ethernet Rail Switch with 3 RJ45 Fast (100 Mbps) Copper Ports and 1 Fast (10/100) Fiber Multimode port with SC connection. 9.6-60 VDC and 24 VAC redundant inputs. Operating Temperature of 32F-140F. Fanless Design and Software Layer 2 Professional.