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TP-Link TL-SM321B-2 Gigabit Single-Mode WDM Bi-Directional SFP Module - TL-SM321B-2 - [SG Ready Stock]

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ACO Profile: v1 • Last Run: 20 Jul 2026, 01:28 pm

TP-Link TL-SM321B-2 Gigabit Single-Mode WDM Bi-Directional SFP Module - TL-SM321B-2 - [SG Ready Stock]

Product Highlights

  • 2km single-mode fiber range
  • Bi-directional WDM operation
  • Standard LC simplex connector
  • <1.5W low power draw
  • 5 year manufacturer warranty

Description

TP-Link TL-SM321B-2 SFP Module

Gigabit single-mode WDM bi-directional SFP transceiver for reliable fiber network connections up to 2km. Uses wavelength division multiplexing to transmit and receive full duplex data over a single simplex LC fiber cable, eliminating the need for dual fiber runs.

Technical Specifications

  • 1000Base-BX WDM standard
  • TX: 1310nm / RX: 1550nm
  • LC/UPC simplex connector
  • 9/125µm single-mode fiber compatible
  • Maximum transmission distance: 2km

Connection Diagram

Compatibility & Deployment

Works with all standard SFP interface devices including network switches, routers, firewalls, NAS, media converters, servers and network adapters. Suitable for campus networks, enterprise office deployments, ISP infrastructure and data center interconnections.

Pair with matching TL-SM321A-2 module for end-to-end bi-directional fiber links.

Reliability Features

Reliability & Operation

  • Operating temperature range: 0°C to 70°C
  • Low power consumption: < 1.5W
  • Robust metal housing
  • Factory tested before shipping
  • 5 year manufacturer warranty

Hot swappable design allows installation and replacement without powering down host network equipment.