Panel-Tec for more than twenty years has manufactured and supported custom gateways that allow devices to connect to factory and building automation networks. Panel-Tec also supports gateways and multiplexers used in the gas pipeline industry. Panel-Tec writes custom software used on hardware it designs and manufactures that allows unlike devices to communicate on serial, CAN, and Ethernet networks. Panel-Tec sells and supports the gateways it designs.