TP-Link TL-FC111A-20 - Fibre media converter - 100Mb LAN - 10Base-T, 100Base-TX, WDM - SC/UPC single-mode/RJ-45 - up to 20 km - 1550 (TX)/1310 (RX) nm

Complies with 802.3u 10/100Base-TX, 100Base-FX standards, Auto-negotiation of Half-Duplex/Full-Duplex transfer mode, 9/125 μm SMF, Bidirectional WDM communication on a single fiber, Ranges up to 20 km (12.4 miles),