Offered with four, five or eight ports and delivering automatic speed, duplex and cable sensing, NT100 series of unmanaged Ethernet switches from Red Lion Controls features rugged construction, providing high durability for mission critical applications in harsh environments. The IEEE 802.3 layer two network switches provide high-speed connections to multiple devices over Ethernet, without requiring manual configuration. Capable of auto negotiating 10/100Mb networks and half/full duplex communications, they avoid performance failures associated with bandwidth congestion, diverse operating speeds or interlinking devices with differing duplex configurations. Additionally, the series is equipped with auto-crossing detection that supports standard and crossover Ethernet cables. Constructed with hardened metal enclosures, the series Ethernet switches are UL approved for use in Class I, Division 2 hazardous locations. These switches provide dependable performance in extreme environments, withstanding temperatures between -40 to 70 °C. Further, to prevent damaging transients or power failures, the switches are equipped with 16kV port protection and redundant power inputs for continuous network performance.