The family of the Factory Line Switches with standard functions FL SWITCH SFN makes possible a fast & economical extension of Ethernet with the numerous variants. The Switches have five or eight ports, from which two can be implemented as multi-mode/single mode glass fibre ports in the SC or in the ST-format. The Switches supports the data transmission rates 10 & 100 MBit/s. at the Twisted Pair ports Glass fibre ports support excluding 100 MBit/s. The Switches regenerate the received data telegrams & sends it to the port, at which the participant with the appropriate destination address is attached.