PLC Industrial Ethernet Switches: Type - Industrial Ethernet Switch; Ports - RJ45 - (4) RJ45; Managed/Unmanaged - Unmanaged; Mounting - DIN Rail Mount; Voltage - Nominal - 24VDC; Operating Temperature - 0 to 60deg C; Status Indication - LEDs; Voltage Range - 19.2-28.8VDC; Dimensions - WxHxD: 45.0x100.0x75.0mm; Manufacturer Series - CSM 1277