Technically speaking, an Ethernet LAN (local area network) is a group of computer devices connected by a common communications line or wireless link in a small geographic area. If you prefer not to link into a WiFi or Cellular GPRS network, Tucor can build an Ethernet LAN for your site from the ground up. Your Tucor controller will send data to a router, which, in turn, will communicate back and forth with your Cycle Manager software and the Tucor server via the Internet.