REC002004AYPP5N00000 is a custom-made 10/100Base-TX to 100Base-FX Ethernet media converter manufactured by Raystar. It is a bridge type media converter with integrated power supply and SC connectors, designed to convert data between 10BASE-T and 10/100 BASE-TX and 100BASE-FX media. It is designed for use in industrial applications such as closed circuit television, cellular communication, and VoIP. It supports long-distance transmission, up to 20 km (12.4 miles) using multimode fiber and up to 60 km (37.3 miles) using single-mode fiber. This converter also features Rack Mounting design, detection of Half-Duplex or Full-Duplex transmission mode, and LED indicators for power and Ethernet status.