The SerialComm SER-FIBER-MM-SC is a high quality industrial-grade bi-directional externally powered RS232 / RS485 / RS422 to multi-mode (MM) 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 multi-mode fiber optic converter can extend the serial signal distance to up to 1.2 miles (2 km) using MM fiber optic cable. The unit supports serial data rates up to 128kbps 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 SER-FIBER-MM-SC has a female serial connector and SC type connector for the fiber optic links which needs to be specified. The media converter is wall, panel, or DIN rail mountable. Includes DIN RAIL BRACKET. An external 5V / 110V-240V power adapter is included in package. MEAN TIME BEFORE FAILURE: 792,085 Hours. This product is backed by our 30-day money back guarantee and 5-year replacement warranty.