The ED3175 is a hardened Ethernet extender with 2 copper pair extender ports and a built in 8-port managed Ethernet switch. The unit can extend Ethernet over copper pair cabling at speeds up to 50Mbps and over distances of 1.9km - please see the datasheet for line rate versus distance table. The built in management features allow the user to remotely configure and manage the device, such as network setting, VDSL settings and firmware updates. The ED3175 also supports STP/RSTP/MSTP and ring redundancy network redundancy on all Ethernet and extender line ports for sophisticated network resiliency. The ED3145 has been designed for operation in harsh industrial environments, the hardened enclosure can be DIN-Rail, panel or wall mounted, it has dual redundant 24-48VDC power inputs and an operating temperature range of -40°C to 75°C.