100Base-BX WDM Bi-Directional SFP Module, TX: 1310nm / RX: 1550nm

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TP-LINK TL-SM221B adopts the latest standard 100Base-BX, transmission over a single strand of fiber, with one different wavelength going in each direction. You can extend the network distance up to 15Km.


  • WDM Bi-Directional SFP Module
  • Supports WDM Bi-Directional technology, using a single strand of fiber, cost saving