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Product specifications

TP-Link Omada 1000Base-BX WDM Bi-Directional SFP Module

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1.25 Gbps, 20 km max, LC, 55.4x14.6x12.9 mm

Part SM321B · UPC 840460605199

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

About this product

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.

Performance

SFP transceiver type
Fiber optic
Maximum data transfer rate
1250 Mbit/s
Interface type
SFP
Single-mode fiber (SMF) supported
Yes
Fiber cable diameters supported (core/cladding)
9/125 µm
Maximum transfer distance
20000 m
Tx wavelength (max)
1310 nm
Rx wavelength (max)
1550 nm
Digital Diagnostics Monitoring (DDM)
Yes

Features

Product colour
Silver
Hot-swap
Yes

Power

Input voltage
3.3 V

Certificates

Certification
FCC, CE

Operational conditions

Minimum operating temperature
0 °C
Maximum operating temperature
70 °C
Operating temperature (T-T)
0 - 70 °C
Storage temperature (T-T)
-40 - 85 °C
Operating relative humidity (H-H)
10 - 90%
Storage relative humidity (H-H)
5 - 90%

Weight & dimensions

Width
55.4 mm
Depth
14.6 mm
Height
12.9 mm

Packaging content

Quantity per pack
1 pc(s)

Packaging data

User guide
Yes

Specifications and images: Database Right data-sheet 2026 Icecat. All rights reserved. Supplied as is, without warranty. Specs Icecat · Open Content License

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