The TRP-C39S fiber converter?allows RS-232/422/485 signals to be bi-directionally converted to fiber optic and extended the line signal distance up to?40KM?over single mode. By using fiber optic transmission technology TRP-C39S secures a stable and error free data transmission over the industrial environments. The high bandwidth fiber connections solve problems with electrical noise and different ground potentials over long transmission. TRP-C39S support auto configuration in data format, baud rate and RS-485 data direction flow control, it also provides with 3000V DC isolation and internal surge protection. The industry DIN rail?and?panel mounting design?enable?user a?fast and professional installation.