![1000Base-BX WDM Bi-Directional SFP Module [TL-SM321A-2]](https://iristechworld.com/wp-content/uploads/2025/08/TL-SM321A-2UN_large_1596528452958p-40x40.jpg "TL-SM321A-2UN_large_1596528452958p.jpg")
![1000Base-BX WDM Bi-Directional SFP Module [TL-SM321A-2]](https://iristechworld.com/wp-content/uploads/2025/08/TL-SM321A-2UN_A_large_1596528464663b-40x40.jpg "TL-SM321A-2UN_A_large_1596528464663b.jpg")
![1000Base-BX WDM Bi-Directional SFP Module [TL-SM321A-2]](https://iristechworld.com/wp-content/uploads/2025/08/TL-SM321A-2UN_large_1596528452958p-4x4.jpg "TL-SM321A-2UN_large_1596528452958p.jpg"){kind=small}
![1000Base-BX WDM Bi-Directional SFP Module [TL-SM321A-2]](https://iristechworld.com/wp-content/uploads/2025/08/TL-SM321A-2UN_A_large_1596528464663b-4x4.jpg "TL-SM321A-2UN_A_large_1596528464663b.jpg"){kind=small}
Adopts the latest standard 1000Base-BX
Up to 2 km transmission distance in 9/125 μm SMF (Single-Mode Fiber)
Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
Supports Digital Diagnostic Monitoring (DDM)
Supports Hot Swappable
1000Base-BX WDM Bi-Directional SFP Module [TL-SM321A-2]
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