N-tron Corp. Offers Ethernet Switches for Process Control,. N-tron Corp. An ISO9001:2008 certified company also manufactures Industrial ethernet switches with opc, media converters and accessories with local support Ethernet Switches for Process Control is a full IEEE 802.3 Compliant switch with advanced management features and monitoring capabilities. The Ethernet Switches for Process Control has Six 10/100 BaseTX RJ-45 Ports and Two 100BaseFX Ports. The Ethernet Switches for Process Control has Rugged Industrial Enclosure.