EXTRALINK SFP module 1.25G WDM 1310/1550NM SM 3KM LC - PAIR (EL-SFP-SM-1G-3KM-PR) - The source for WiFi products at best prices in Europe - wifi-stock.com
8-port Gigabit Ethernet Switch With 1 Sfp Fiber Port Media Converter Fiber Transceiver - Network Switches - AliExpress
Fortinet compatible SP-CABLE-FS-SFP+1
SFP 1G BiDi (WDM) 160km 1490/1550 DOM SC (1 pair) – Dimiks Store
SFP, S1.1, 100/155Mbps, DDM, 15km 1310nm, 14dB, SM - Fiberworks
SFP Single Fiber 1 km transceiver | 1G BX Ethernet