The SerialComm 232-FIBER-SM-SC is a high quality industrial-grade bi-directional externally powered RS232 to single mode (SM) fiber optic converter eclosed in a heavy-duty steel housing. Besides the capability of long distance data transmission, the fiber lines are inherently resistant to EMI/RFI and transient surges including lightning; therefore, they are ideal for data communications near heavy electrical equipment and other electrical or atmospheric interference conditions. The single mode fiber optic converter can extend the RS232 signal distance to up to 12.4 miles (20 km) using SM fiber optic duplex cable. The unit supports serial data rates up to 128k baud and features auto-sensing data turnaround and therefore requires no flow control or any software drivers, The converter has no DIP switches or jumpers making it Plug-and-Play. The 232-FIBER-SM-SC has a female DB9 RS232 connector and SC type connector for the fiber optic duplex links which needs to be specified. The media converter is wall, panel, or DIN rail mountable. An external 5V / 110V-240V power adapter is included in package, and a pair of din brackets for optional mounting. MEAN TIME BEFORE FAILURE: 701,029 Hours. DIN RAIL BRACKET Included. This product is backed by our 30-day money back guarantee and 5-year replacement warranty.