The media converter transform the transmission media of Ethernet signal from CAT5 to optical fiber. It can extend the transmission distance to several kilometer or hundred kilometer.Using media converter is an economical solution to achieve long distance transmission base on current status. Technical parameters: 1. Standard Protocol: IEEE802.3 10 Base-T standard IEEE 802.3u 100Base-TX/FX standard IEEE 802.3z 1000Base-TX/FX standard 2.Connector:oneUTPRJ-45connector,oneSC/STconnector 3. Operation mode: full duplex mode or half duplex mode 4. Power supply parameter: outside: 5V DC 2A; built-in: 110-265V AC 48VDC 5. Environmental temperature: -40C~+85C. 6. Relative humidity: 5%-90% 7. TP cable: Cat5 UTP cable 8. Transfer fiber: multi-mode: 50/125, 62.5/125 or 100/140m single mode:: 8.3/125, 8.7/125, 9/125 or 10/125m.