From the leaders in innovating the Ruggedcom media converters by Siemens is a top of the line creation. It is designed to cater a wide variety of applications and concepts. It features a utility-grade, protocol-independent, serial-to-fiber and serial standards converter for all your serial communication requirements, allows RS485, RS422, or RS232 devices or networks to communicate over secure,noise immune, optically isolated, fiber optic cabling at extended distances as well convert RS232 to either RS485 or RS422 serial standards, Built to withstand even the most demanding of application. a definite must have for those who seek a product worth investing on.