Home > PC Parts > Networking > Networking Accessories > TP-Link 1000Base-BX WDM Bi-Directional Industrial SFP Module (ISM321B-20)

TP-Link 1000Base-BX WDM Bi-Directional Industrial SFP Module (ISM321B-20)

TP-Link ISM321B-20 industrial SFP module: 1.25 Gbps bi‑directional WDM over a single 9/125 µm SM fiber up to 20 km, LC simplex, 3.3 V, DDM, hot‑swappable, -40 °C to 85 °C operation.

$39.00

or 4x fortnightly payments of $330 with ZipPay
Learn more

Pick Up Time : Question Mark

Delivery: Question Mark

- +

Want a stock alert?

Please enter a valid email address

By clicking 'Notify Me', you agree to our Terms & Conditions and consent to receive email updates. You can unsubscribe at any time.

Wish Add to Wishlist

Buy Now, Pay Later:

Your Store

Your store is set to:

Check live stock level

Stock Levels May Vary

Stock is different at each store. To secure your item, order online.
Walk-ins are still welcome but stock isn’t guaranteed.

Our team is ready to help! Please contact us if you have any questions about product specifications, stock availability, or compatibility.

TP-Link 1000Base-BX WDM Bi-Directional Industrial SFP Module
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.

Supports WDM Bi-Directional technology, using a single strand of fiber, cost saving
Single mode SFP LC Transceiver
Hot-Pluggable with maximum flexibility
Supports Digital Diagnostic Monitoring (DDM)
Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
Industrial Product Operating Temperature Range: -40-85°C

SPECIFICATIONS:

TRANSCEIVER
Standards and Protocols	IEEE 802.3z,TCP/IP
Wave Length	Tx: 1310 nm Rx: 1550 nm
Power Supply	3.3V
Fiber Type	9/125 µm Single-mode
Max. Cable Length	20 km
Data Rate	1.25Gbps
Connector	LC Simplex
Regulatory Compliance	FCC, CE
Environment	• Operating Temperature: -40˚C~ 85˚C (-40˚C~ 185˚F) • Storage Temperature: -40℃~85℃ (-40˚C~ 185˚F) • Operating Humidity: 5%~85% non-condensing • Storage Humidity: 5%~85% non-condensing
HARDWARE FEATURES
DDM	Yes
SFP-MSA	Yes
Hot Swappable	Yes
Dimensions ( W x D x H )	2.20.5 0.4 in (56.413.411.0 mm)
OTHERS
Package Content	• ISM321LB-20 • Installation Guide
Note	Use ISM321A-20 & ISM321B-20 together for fast and reliable connectivity.

Product Name:

TP-Link 1000Base-BX WDM Bi-Directional Industrial SFP Module (ISM321B-20)
Model Number:

ISM321B-20
Brand:

TP-Link
Warranty Period:

3 Year

Reviews

Write Review

TP-Link 1000Base-BX WDM Bi-Directional Industrial SFP Module (ISM321B-20)

Required field are marked with *

Overall Rating *

Click the stars to rate

Review *

Write your product review here

Describe for example:

Why you chose this rating
What you liked or disliked

Who do you recommend this product to?

10 words too short

Pros & Cons

Your public name or nickname *

Email *

I agree to the terms & conditions

Search Term in Category

Brands

Promotions

Categories

MSY PC Repairs and Upgrades service

Book online

MSY Pick2Fix with FSD/Uber 4.0 (2 reviews)

Book now - Pick2Fix with FSD/Uber!

Book online

TP-Link 1000Base-BX WDM Bi-Directional Industrial SFP Module (ISM321B-20)

TP-Link ISM321B-20 industrial SFP module: 1.25 Gbps bi‑directional WDM over a single 9/125 µm SM fiber up to 20 km, LC simplex, 3.3 V, DDM, hot‑swappable, -40 °C to 85 °C operation.

Stock Levels May Vary

Reviews

Similar Products

MSY Pick2Fix with FSD/Uber

4.0

(2 reviews)

TP-Link ISM321B-20 industrial SFP module: 1.25 Gbps bi‑directional WDM over a single 9/125 µm SM fiber up to 20 km, LC simplex, 3.3 V, DDM, hot‑swappable, -40 °C to 85 °C operation.