This series models are non-managed industrial grade gigabit switches with 4 or 8 10/100/1000Base-T ports and 0~2 fiber ports, that provide stable and reliable Ethernet transmission.Housed in rugged DIN rail or wall mountable enclosures, these switches are designed for harsh environments, such as industrial networking, intelligent transportation systems (ITS) and are also suitable for many military and utility market applications where environmental conditions exceed commercial product specifications. Standard operating temperature range models (-10 to 60°C) and wide operating temperature range models (-40 to 75°C) fulfill the special needs of industrial automation applications.