Will this 1.25G BiDi module work seamlessly with my mix of Juniper and Ubiquiti switches without triggering any vendor-lock errors?

Absolutely! This LS-BL31551G-02C module is strictly MSA compliant. We’ve extensively verified its interoperability across major brands, including Cisco, Juniper, and Ubiquiti, ensuring plug-and-play integration with zero vendor-lock issues on your end.

This standard module is rated for 0-70°C. Do you have an industrial-grade version for outdoor cabinets that endure freezing temperatures?

Yes! While this commercial unit supports 0 to 70°C, we also offer an industrial-grade counterpart (ending with "-I") that guarantees stable performance in harsh environments ranging from -40°C to +85°C. You can easily find the industrial version in our store.

We're planning a mass deployment for a new data center. Do you offer tier-pricing or bulk discounts if I order over 500 units?

Yes, we do! For large-scale data center rollouts, we provide highly competitive volume pricing. If you need 500+ units for bulk procurement, please reach out to our sales team directly to unlock exclusive B2B wholesale rates.

Can you confirm if this optical module meets all global regulatory standards like CE, FCC, and RoHS for our corporate compliance checks?

Definitely. All our Link-PP optical transceivers strictly adhere to CE, FCC, and RoHS certifications. We also ensure full compliance with IEEE 802.3z and Fast Ethernet standards, fully backing your enterprise compliance requirements.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 1G BiDi SFP; 202146

Click to open expanded view

LINK-PP LS-BL31551G-02C 1.25G BiDi SFP 1310nm-TX/1550nm-RX 2km DOM Simplex LC SMF Optical Transceiver Module

Name: LINK-PP LS-BL31551G-02C 1.25G BiDi SFP 1310nm-TX/1550nm-RX 2km DOM Simplex LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 202146
Price: 4.73 USD
Availability: InStock
Rating: 5 (21 reviews)

# 202146

Product: LINK-PP LS-BL31551G-02C 1.25G BiDi SFP 1310nm-TX/1550nm-RX 2km DOM Simplex LC SMF Optical Transceiver Module
SKU: 202146
P/N: LS-BL31551G-02C
Price: $ 5.5
Stock: 90 in Stock
Sold: 910
Product URL: https://www.l-p.com/products/491626.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

For Order Over $3000 Get $50.00 Off , Code: Linkpp50

For Order Over $5000 Get $100.00 Off , Code: Linkpp100

New Users: $10 Coupon for Orders , Code: linkpp2610

21 Reviews

4 Questions

Request Stock

910 Sold

$ 5.5

Free shipping over $600, If you need a more favorable price, please contact us directly.

Qty (pcs) :

Unit Price :

$ 5.5

100

$ 5.225

1000

$ 5.06

3000

$ 4.895

6000

$ 4.73

Manufacture: LINK-PP

P/N: LS-BL31551G-02C

Compatible:: LINK-PP

Compatible P/N:: LS-BL31551G-02C | 2km; LS-BL55311G-02C | 2km; LS-BL31551G-03C | 3km; LS-BL31551G-03I | 3km; LS-BL55311G-03C | 3km; LS-BL55311G-03I | 3km; LS-BL31491G-10C | 10km; LS-BL31491G-10I | 10km; LS-BL31551G-10C | 10km; LS-BL31551G-10I | 10km; LS-BL31551GE-10C | 10km; LS-BL49311G-10C | 10km; LS-BL49311G-10I | 10km; LS-BL49551G-10C | 10km; LS-BL49551G-10I | 10km; LS-BL55311G-10C | 10km; LS-BL55311G-10I | 10km; LS-BL55311GE-10C | 10km; LS-BL55491G-10C | 10km; LS-BL55491G-10I | 10km; LS-BL31551G-15C | 15km; LS-BL31491G-20C | 20km; LS-BL31491G-20I | 20km; LS-BL31551G-20C | 20km; LS-BL31551G-20I | 20km; LS-BL49311G-20C | 20km; LS-BL49311G-20I | 20km; LS-BL49551G-20C | 20km; LS-BL55311G-20C | 20km; LS-BL55311G-20I | 20km; LS-BL55491G-20C | 20km; LS-BL31491G-40C | 40km; LS-BL31491G-40I | 40km; LS-BL31551G-40C | 40km; LS-BL31551G-40I | 40km; LS-BL49311G-40C | 40km; LS-BL49311G-40I | 40km; LS-BL55311G-40C | 40km; LS-BL55311G-40I | 40km; LS-BL31551G-60C | 60km; LS-BL31551G-60I | 60km; LS-BL49551G-60C | 60km; LS-BL55311G-60C | 60km; LS-BL55311G-60I | 60km; LS-BL55491G-60C | 60km; LS-BL27331G-80C | 80km; LS-BL33271G-80C | 80km; LS-BL49551G-80C | 80km; LS-BL49551G-80I | 80km; LS-BL55491G-80C | 80km; LS-BL55491G-80I | 80km; LS-BL49551G-A0C | 100km; LS-BL49551G-A0I | 100km; LS-BL55491G-A0C | 100km; LS-BL55491G-A0I | 100km; LS-BL49551G-A2C | 120km; LS-BL49551G-A2I | 120km; LS-BL55491G-A2C | 120km; LS-BL55491G-A2I | 120km; LS-BL49551G-A5C | 150km; LS-BL49551G-A5I | 150km; LS-BL55491G-A5C | 150km; LS-BL55491G-A5I | 150km; LS-BL49551G-A6C | 160km; LS-BL49551G-A6I | 160km; LS-BL55491G-A6C | 160km; LS-BL55491G-A6I | 160km

Shipping:

To Be Negotiated

Free Shipping

Can't deliver

to United States via {{now_chooseship?now_chooseship.name:''}}

Estimated delivery time : {{now_chooseship?now_chooseship.datemin:''}}-{{now_chooseship?now_chooseship.datemax:''}} days. See details

5-Year Warranty 30-Day Returns 30-Day Exchange

Stock:

{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}} .

Quantity:

( Min. Order {{detail_data.prodInfo.minimum_ordered_quantity}} )

undeliverable

Total Price:

{{ detail_data.displayed_price.unit_prefix }} {{ detail_data.displayed_price.original_total_price }} ( {{ detail_data.displayed_price.rate_of_discount }}% OFF ) {{detail_data.displayed_price.ex_sell_type}}

Add to wish

Specifications

Specification
Videos
Matching Products
Download
Q&A
Customer Reviews

LINK-PP LS-BL31551G-02C 1.25G BiDi SFP Specifications

The LINK-PP LS-BL31551G-02C is a high-performance 1.25G BiDi SFP optical transceiver specifically designed for robust Gigabit Ethernet connections. Operating over single-mode fiber, this 1.25Gbps bidirectional module utilizes advanced wavelength-division multiplexing technology to transmit and receive data simultaneously. It delivers cost-effective network upgrades while ensuring excellent signal integrity across demanding data center environments.

LINK-PP Part Number	LS-BL31551G-02C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1310nm-TX/1550nm-RX	Max Cable Distance	2km
Connector	Simplex LC	Media	SMF
Transmitter Type	FP	Receiver Type	PIN
TX Power	-15 to -8dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	<-23dBm	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

Videos

Matching Products

Pictures

ID#

Description

Price

Stock

Add to Cart

Download

Questions & Answers
Ask a Question

No data

Q: Will this 1.25G BiDi module work seamlessly with my mix of Juniper and Ubiquiti switches without triggering any vendor-lock errors? By J***n on 2026-06-06

A: Absolutely! This LS-BL31551G-02C module is strictly MSA compliant. We’ve extensively verified its interoperability across major brands, including Cisco, Juniper, and Ubiquiti, ensuring plug-and-play integration with zero vendor-lock issues on your end. By admin on 2026-06-06
Q: This standard module is rated for 0-70°C. Do you have an industrial-grade version for outdoor cabinets that endure freezing temperatures? By M***l on 2026-04-21

A: Yes! While this commercial unit supports 0 to 70°C, we also offer an industrial-grade counterpart (ending with "-I") that guarantees stable performance in harsh environments ranging from -40°C to +85°C. You can easily find the industrial version in our store. By admin on 2026-04-21
Q: We're planning a mass deployment for a new data center. Do you offer tier-pricing or bulk discounts if I order over 500 units? By A***r on 2026-01-27

A: Yes, we do! For large-scale data center rollouts, we provide highly competitive volume pricing. If you need 500+ units for bulk procurement, please reach out to our sales team directly to unlock exclusive B2B wholesale rates. By admin on 2026-01-27
Q: Can you confirm if this optical module meets all global regulatory standards like CE, FCC, and RoHS for our corporate compliance checks? By S***z on 2025-11-03

A: Definitely. All our Link-PP optical transceivers strictly adhere to CE, FCC, and RoHS certifications. We also ensure full compliance with IEEE 802.3z and Fast Ethernet standards, fully backing your enterprise compliance requirements. By admin on 2025-11-03

Customer Reviews
Write a Review

{{stardata.star}}

{{comment.count}} reviews
5 Stars

{{comment.star5}}%

4 Stars

{{comment.star4}}%

3 Stars

{{comment.star3}}%

2 Stars

{{comment.star2}}%

1 Star

{{comment.star1}}%

All Reviews ({{comment.star_num?comment.star_num:comment.count}})

All Reviews

5 stars only

4 stars only

3 stars only

2 stars only

1 star only
Reviews with Pictures ( {{comment.pic_comment}} )
See All Reviews

No data

J***z

Czech Republic

Verified Purchase

5 .0

2026-07-04

DOM features work exactly as expected. Highly recommend this for enterprise gigabit routing.

91 Helpful vote Comments

W***z

Peru

Verified Purchase

5 .0

2026-06-26

Great bidirectional SFP for building-to-building fiber links. The 1310nm-TX Tx power is consistent.

58 Helpful vote Comments

A***l

Hong Kong

Verified Purchase

5 .0

2026-06-19

Works flawlessly in our edge computing setup.

83 Helpful vote Comments

J***g

Bolivia

Verified Purchase

5 .0

2026-04-15

We did a data center mass deployment with these modules. The 0-70°C operating temp handles our dense server racks well. Excellent 2km transmission distance for our leaf-to-spine architecture!

165 Helpful vote Comments

S***s

Macao

Verified Purchase

5 .0

2026-04-08

Perfect OEM compatibility on our Cisco switches! The 1.25G transmission is rock solid.

85 Helpful vote Comments

J***z

Japan

Verified Purchase

4 .0

2026-02-18

Packaging was slightly dented upon arrival, but the 1.25G BiDi module works flawlessly.

11 Helpful vote Comments

D***a

Australia

Verified Purchase

5 .0

2026-02-14

Ideal single-mode optical transceiver for our budget. 2km range is completely accurate.

112 Helpful vote Comments

R***a

Norway

Verified Purchase

5 .0

2026-02-08

Seamless gigabit fibre channel connectivity!

66 Helpful vote Comments

D***z

Turkey

Verified Purchase

5 .0

2026-01-30

Cost-effective fiber optic connectivity solution.

147 Helpful vote Comments

A***r

Ecuador

Verified Purchase

5 .0

2026-01-27

Fast delivery and perfect MSA compliance.

79 Helpful vote Comments

J***n

Colombia

Verified Purchase

5 .0

2026-01-07

The simplex LC connector snapped in perfectly. Good module for our campus networking nodes.

61 Helpful vote Comments

M***z

Austria

Verified Purchase

5 .0

2025-11-21

Using this for cell tower backhaul. The single-mode fiber connection is incredibly stable, and the DOM diagnostics give us real-time peace of mind in the outdoor cabinet setup.

171 Helpful vote Comments

M***r

Chile

Verified Purchase

5 .0

2025-10-07

Top-notch 1.25G BiDi module for the price.

28 Helpful vote Comments

L***l

Panama

Verified Purchase

5 .0

2025-09-13

Simplex LC interface is a huge space saver.

21 Helpful vote Comments

T***s

Finland

Verified Purchase

5 .0

2025-04-26

Integrated this 1G transceiver alongside my home 10G NAS network for remote access. The Simplex LC interface saves physical space, and the gigabit ethernet protocol runs without any packet loss.

64 Helpful vote Comments

E***l

Philippines

Verified Purchase

5 .0

2025-04-16

WDM technology at its finest. Love it.

49 Helpful vote Comments

J***z

Venezuela

Verified Purchase

5 .0

2025-04-15

Tested this 1310nm-TX/1550nm-RX BiDi SFP across a multi-brand switch compatibility test. MSA compliance is spot on! DDM readouts are highly accurate for our campus fiber networking. Solid performance.

42 Helpful vote Comments

D***n

United States

Verified Purchase

5 .0

2025-04-02

Handled the 0-70°C commercial temperature range effortlessly in our slightly warm telco rack.

194 Helpful vote Comments

E***n

Kuwait

Verified Purchase

5 .0