TP LINK 

TP LINK TP-Link NT ISM321B-20 Omada 1000Base-BX WDM Bi-Directional SFP Module Retail

Mfg Part Number:  ISM321B-20  
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Price: $53.57
Quantity:
More to Come
Last Updated: Jan 17, 2026
No Sales Tax except these states
, PO and Wire.

ISM321B-20 is an industrial WDM SFP Module introduced for extending transfer distance. Attached to our industrial switches, ISM321B-20 can extend the distance to 20km with one single fiber. Users can choose whether and which items to use the fiber modules according to the demand in order to lower cost.

Main Specification
General Information
Manufacturer TP-LINK Technologies Co., Ltd
Manufacturer Part Number ISM321B-20
Manufacturer Website Address http://www.tp-link.com/us
Brand Name Omada
Product Model ISM321B-20
Product Name 1000Base-BX WDM Bi-Directional Industrial SFP Module
Product Type SFP
Technical Information
Application/Usage Data Networking
Application/Usage Optical Network
Features Digital Diagnostics Monitoring Interface (DDMI)
Interfaces/Ports
Total Number of Ports 1
Connector Type LC
Interfaces/Ports Details 1 x LC 1000Base-BX Network
Media & Performance
Media Type Supported Optical Fiber
Fiber Optic Cable Core/Cladding Specification 9/125 µm
Fiber Optic Cable Wavelength 1550 nm
Fiber Optic Cable Wavelength 1310 nm
Fiber Mode Supported Single-mode
Ethernet Technology 1.25 Gigabit Ethernet
Network Technology 1000Base-BX
Maximum Distance Supported 20 km
Maximum Data Transfer Rate 1.25 Gbit/s
Environmental Conditions
Minimum Operating Temperature -40°F (-40°C)
Maximum Operating Temperature 185°F (85°C)
Physical Characteristics
Form Factor Hot-swappable
Form Factor Hot-pluggable
Height 0.4"
Width 2.2"
Depth 0.5"
Miscellaneous
Package Contents
  • 1000Base-BX WDM Bi-Directional Industrial SFP Module
  • Installation Guide
Compatibility

MSA Complaint

Environmental Compliance Restriction of Hazardous Substances (RoHS)
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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