Planet MGB-LX Mini GBIC LX Module - 20KM.

Cablenet Planet SFP - Port 1000BASE-SX Mini-GBIC Module - 550m LC-Multimode

TP-Link TL-SM321B 1000Base-BX WDM SFP 1310/1550nm LC Single Mode 20km

STARTECH CTP-SFP-1GE-LX Compatible Gigabit SFP Transceiver Module 1000Base-LX

200Pcs SFP Dust Plug LC Dual Silica Gel Protective Cover Optical Module Dust Cap

Ubiquiti UACC-OM-MM-1G-D-2 2-Pack 1G Multi-Mode Optical Sfp Module

Cablenet 1GBASE Copper RJ45 100m Cisco Compatible Transceiver

TP-Link TL-SM321B 1000Base-BX WDM Bi-Directional SFP Module – Single Fiber 20km