The series models are 4~8 ports 10/100Base-TX Ethernet unmanaged Fast Ethernet switches, with 0~2x 100Base-FX fiber port, that providestable and reliable Ethernet transmission. Housed in rugged DIN rail or wall mountable enclosures, these switches are designed for harshenvironments, such as industrial networking, intelligent transportation systems (ITS) and are also suitable for many military and utility marketapplications where environmental conditions exceed commercial product specifications. Standard operating temperature range models (-10to 60°C) and wide operating temperature range models (-40 to 75°C) fulfill the special needs of industrial automation applications.