TP-LINK (TL-SM321B) 1000Base-BX WDM Bi-Directional SFP Module

Sale price £ 12.80
Only 15 units left

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1000Base-BX WDM Bi-Directional SFP Module

  • Up to 20 km transmission distance with 9/125 μm SMF (Single-Mode Fiber)
  • Bidirectional WDM communication on a single fiber
  • Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
  • Supports Digital Diagnostic Monitoring (DDM)
  • Hot-swappable module design
  • Work with TL-SM321A as a pair


What This Product Does

TP-Link´s TL-SM321B adopts the latest standard 1000Base-BX, transmitting over one single-mode fiber with one different wavelength going in each direction. Paired with TL-SM321A, You can extend the network distance up to 20Km with TP-Link´s routers, switches and media converters for reliable high-speed long-distance communication.



Limited Lifetime

0.0300 kg

Package Weight
Device Type
1.25 Gbps
Standards and Protocols
IEEE 802.3z, TCP/IP
Single-mode Fiber
Fiber Type
9/125 um Single-mode
Max. Cable Length
20k m
Data Rate
Wave Length
TX: 1310 nm RX_ 1550 nm
Port Type
LC Simplex
Power Supply
Environment (℃)
Operating Temperature_ 0–70 °C (32–158 °F) Storage Temperature_ -40–85 °C ( -40–185 °F) Operating Humidity_ 10–90% RH, Non-Condensing Storage Humidity_ 5–90% RH, Non-Condensing
Package Contents
SFP Module TL-SM321B Installation Guide
Package Type

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