The series models are 4-port 10/100/1000Base-T Ethernet non-managed Gigabit switches, with 1 or 2 fiber ports, that provide stable andreliable 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 applicationswhere environmental conditions exceed commercial product specifications. Standard operating temperature range models (-10 to 60°C) andwide operating temperature range models (-40 to 75°C) fulfill the special needs of industrial automation applications.