TP-Link 1000Base-BX WDM Bi-Directional SFP Module (TL-SM321A-2) TX: 1550nm, RX: 1310nm, Up to 2KM Transmission Distance, LC Simplex | SM321A-2

TP-Link 1000Base-BX WDM Bi-Directional SFP Module (TL-SM321A-2)
• 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

HARDWARE FEATURES
DDM Yes
SFP-MSA Yes
Hot Swappable Yes
MEDIA CONVERTER MODULE
Standards and Protocols IEEE 802.3z, TCP/IP
Wave Length TX: 1550 nm
RX: 1310 nm
Power Supply 3.3 V
Safety Emission FCC, CE
Cabel Single-Mode Fiber
Fiber Type 9/125 μm Single-Mode
Max. Cable Length 2 KM
Data Rate 1.25 Gbps
Port Type LC Simplex
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

Product Last Updated: 12/09/2026

* Whilst we endevour to have the correct information on our products provided from the supplier/manufacturer errors do occur. If you would like to double check the information, please feel free to contact us and we will be more than happy to confirm information on the item prior to purchase. In the event that product information is incorrect due to information we received from our supplier or manufacturer, we do not take responsibility or be held liable for damage(s) or loss(s). We will work with you and do our best to make the best of a bad situation and work with our supplier(s) and/or manufacturer(s) to supply the correct information for the item purchased etc..