The EM203 is a minute serial-to-Ethernet module. The module in combination with RJ203 jack/magnetics uses only 31x19mm of board space. The module can be alternatively used with any suitable magnetics and jack. EM203 features Tibbo Device Server Toolkit software that includes Virtual Serial Port Driver for Windows and Linux. The series is also supplied with TiOS firmware and work as a simple BASIC-programmable controller. The series can be delivered as a standalone or in combination with the RJ203.