The RD300-OF is specifically made to allow the use of a greater communication bandwidth while providing at full immunity from the EMI/RFI interferences to ensure an increased security protection. It also provides a wide range of benefits and features including its non-explosive functionality which is a harm-free tool to use, zero EMC emission, ground-free loops and the prevention against lightning and high voltage environments. The RD300 is also a light-weight device ideal for a hand-held use and is corrosion-proof. The high quality device has a plug and play functionality with a self-configuration mechanism which is based on the CPLD component. The RD300 also offers a good quality security with a built-in unit to control fiber integrity.