TP-LINK 1000Base-BX WDM Bi-Directional SFP Module LC Connector Single-mode 10km

TP-Link´s SM321B (TL-SM321B) adopts the latest standard 1000Base-BX, transmitting over a single strand of fiber with one different wavelength going in each direction. You can extend the network distance up to 20Km with TP-Link´s routers, switches and media converters to provide high speed and stability.