Does it support DOM diagnostics for monitoring?

Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing supported switches to monitor transmit power, receive power, module temperature, supply voltage, and laser bias current for easier network maintenance.

Do I need two fibers to use this transceiver?

No. This is a BiDi SFP module that uses a single simplex LC connector over single-mode fiber. It transmits at 1490nm and receives at 1550nm, and must be paired with the complementary 1550nm TX / 1490nm RX module.

Will this module work with Cisco and other OEM switches?

Yes. The module is designed for broad OEM compatibility and is widely deployed with Cisco-compatible switches as well as many other major networking brands. Please verify compatibility with your specific switch model before ordering.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 1G BiDi SFP; 202091

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LINK-PP LS-BL49551G-60C 1G BiDi SFP 1490nm-TX/1550nm-RX 60km DOM Simplex LC SMF Optical Transceiver Module

Name: LINK-PP LS-BL49551G-60C 1G BiDi SFP 1490nm-TX/1550nm-RX 60km DOM Simplex LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 202091
Price: 28.38 USD
Availability: InStock
Rating: 5 (58 reviews)

# 202091

Product: LINK-PP LS-BL49551G-60C 1G BiDi SFP 1490nm-TX/1550nm-RX 60km DOM Simplex LC SMF Optical Transceiver Module
SKU: 202091
P/N: LS-BL49551G-60C
Price: $ 33
Stock: 190 in Stock
Sold: 5.2K
Product URL: https://www.l-p.com/products/491574.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

58 Reviews

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$ 31.35

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$ 30.36

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Manufacture: LINK-PP

P/N: LS-BL49551G-60C

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

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LINK-PP LS-BL49551G-60C 1G BiDi SFP Specifications

The LINK-PP LS-BL49551G-60C is a 1.25 Gbps BiDi SFP transceiver with a 1490 nm transmission wavelength and a 1550 nm receive wavelength on a single, simplex LC port. It allows for reliable bidirectional communication at distances of up to 60 km on standard single-mode fiber.

LINK-PP Part Number	LS-BL49551G-60C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1490nm-TX/1550nm-RX	Max Cable Distance	60km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB BiDi	Receiver Type	PIN
TX Power	-5 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	<-24dBm	Receiver Overload	-1dBm
Operating Temperature Range	0 to 70°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Does it support DOM diagnostics for monitoring? By C***s on 2026-05-13

A: Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing supported switches to monitor transmit power, receive power, module temperature, supply voltage, and laser bias current for easier network maintenance. By admin on 2026-05-13
Q: Do I need two fibers to use this transceiver? By K***e on 2026-01-01

A: No. This is a BiDi SFP module that uses a single simplex LC connector over single-mode fiber. It transmits at 1490nm and receives at 1550nm, and must be paired with the complementary 1550nm TX / 1490nm RX module. By admin on 2026-01-01
Q: Will this module work with Cisco and other OEM switches? By R***l on 2025-04-22

A: Yes. The module is designed for broad OEM compatibility and is widely deployed with Cisco-compatible switches as well as many other major networking brands. Please verify compatibility with your specific switch model before ordering. By admin on 2025-04-23

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Charlotte Moore

Japan

Verified Purchase

5 .0

2026-05-29

Running these in our enterprise data room for long-distance uplinks between buildings. Stable Gigabit throughput, accurate DDM information, and no unexpected link drops so far.

39 Helpful vote Comments

Sarah Rogers

Indonesia

Verified Purchase

5 .0

2026-05-12

No compatibility issues at all. :D

37 Helpful vote Comments

Morgan Wilson

Indonesia

Verified Purchase

4 .0

2026-04-24

Shipping took a little longer than expected, but every module worked perfectly.

8 Helpful vote Comments

Jacob Thompson

Poland

Verified Purchase

5 .0

2026-03-20

This module helped us reuse existing single-fiber infrastructure instead of installing another strand. Installation was simple, and performance has been stable since day one. ;)

88 Helpful vote Comments

Hannah Sanchez

Spain

Verified Purchase

5 .0

2026-02-19

Stable 1G BiDi SFP for long fiber runs.

31 Helpful vote Comments

Rebecca Robinson

Belgium

Verified Purchase

5 .0

2026-01-12

We replaced branded 1000BASE-BX optics with this model during a network expansion. The 1490nm transmitter and 1550nm receiver matched our existing BiDi deployment perfectly. Optical power, temperature, and voltage reported through DOM all remained within expected ranges after continuous traffic testing. Considering the price difference compared with OEM optics, this has been an excellent investment for our enterprise network.

36 Helpful vote Comments

Gary Adams

Brunei Darussalam

Verified Purchase

5 .0

2025-12-23

Linked up right away. :)

23 Helpful vote Comments

Nicholas Young

Republic of Korea

Verified Purchase

5 .0

2025-12-08

We tested the module with Cisco, MikroTik, TP-Link, and Ubiquiti switches. Every platform recognized it correctly, making multi-vendor deployments much easier.

97 Helpful vote Comments

C***o

Malaysia

Verified Purchase

5 .0

2025-12-04

Looks and feels sturdy. Doesn't seem to cause any loss of data transmission, although I didn't do any rigorous quantitative assessment. Just didn't feel any data transmission issues were occurring.

92 Helpful vote Comments

Daniel Davis

Ireland

Verified Purchase

5 .0

2025-11-25

Clean packaging, anti-static protection, and every unit passed our incoming inspection. Great experience for bulk purchasing.

90 Helpful vote Comments

t***r

United Kingdom

Verified Purchase

5 .0

2025-11-15

Great company to do business with, trustworthy, prompt delivery! There is no problem with my order! I like everything at Link-pp.COM!

19 Helpful vote Comments

Rebecca Nelson

Sweden

Verified Purchase

5 .0

2025-10-03

Purchased a batch for our ISP access network. Link stability has been excellent, and DOM monitoring makes it easy to verify optical power remotely. Very satisfied with the overall quality.

37 Helpful vote Comments

Emily Martinez

Belgium

Verified Purchase

5 .0

2025-09-21

We selected this 1.25Gbps BiDi optical transceiver for a regional warehouse project where fiber resources were limited. Using a single fiber instead of two significantly reduced installation costs. Compatibility testing covered Cisco Catalyst, MikroTik CRS, and several unmanaged Gigabit switches with excellent results. If you're searching for a reliable 1G BiDi SFP 60km with DOM support, this module is definitely worth considering. :)

13 Helpful vote Comments

A***L

United Kingdom

Verified Purchase

5 .0

2025-08-12

I was pleasantly surprised at how quick it was to set up an account and place the order.

138 Helpful vote Comments

James Perez

Bulgaria

Verified Purchase

5 .0

2025-07-25

Good performance, easy installation, and stable optical link.

43 Helpful vote Comments

J***n

United States

Verified Purchase

5 .0

2025-06-03

Very easy to find what I need.

59 Helpful vote Comments

B***s

Finland

Verified Purchase

5 .0

2025-04-26

This is an easy to use website that has a staggeringly large selection of products.

65 Helpful vote Comments

Isabella Evans

Germany

Verified Purchase

5 .0

2025-04-02

Works perfectly on single-mode fiber.

13 Helpful vote Comments

Jonathan Evans

United Kingdom

Verified Purchase

5 .0

2025-03-19

Excellent 60km optical performance.

52 Helpful vote Comments

J***e

France

Verified Purchase

5 .0

2025-02-03

Great purchasing experience.

67 Helpful vote Comments

P***h

Singapore

Verified Purchase

5 .0

2025-01-21

Link-pp has everything that I need in stock, with the best prices and the Fastest shipping. Shopping here is always a fantastic experience for me.

60 Helpful vote Comments

N***d

Romania

Verified Purchase

5 .0

2025-01-17

They get your equipment shipped to you quickly. Their prices are good and the products are quality.

28 Helpful vote Comments

M***S

Morocco

Verified Purchase

5 .0

2024-12-08

Thank you LINK-PP for continuing to provide exceptional parts and service

12 Helpful vote Comments

Robert Thompson

Taiwan, Province of China

Verified Purchase

5 .0

2024-11-28

Perfect replacement for expensive branded optics. :P

62 Helpful vote Comments

Christian Wright

Denmark

Verified Purchase

5 .0

2024-11-11

Reliable simplex LC SFP module.

37 Helpful vote Comments

S***t

France

Verified Purchase

5 .0

2024-09-19

Even though I am not an expert in this field, I have to say that the customer service is amazing and very helpful.LINK-PP is highly recommended.

58 Helpful vote Comments

Amelia Jackson

Cambodia

Verified Purchase

5 .0

2024-08-12

Our IT team deployed more than forty units across multiple campus locations using existing simplex LC single-mode fiber. Installation required no additional configuration, and every module established a stable Gigabit Ethernet connection immediately. We monitored transmit power and receive power through DDM during burn-in testing, and all values remained consistent. The modules have performed reliably for daily business traffic and remote office connectivity.

47 Helpful vote Comments

L***n

Hong Kong

Verified Purchase

5 .0

2024-07-15

Simple order. Good price. Promptly delivered

131 Helpful vote Comments

Allison Murphy

Iran, Islamic Republic of

Verified Purchase

5 .0

2024-07-07

Installed this 1490nm TX / 1550nm RX BiDi SFP between two office buildings over existing single-mode fiber. The optical link came up immediately and DOM values stayed consistent throughout testing. Nice solution for extending Gigabit Ethernet without replacing fiber.

94 Helpful vote Comments

George Martin

Hungary

Verified Purchase

5 .0

2024-07-06

Great value compared with OEM modules.

20 Helpful vote Comments

L***l

France

Verified Purchase

5 .0

2024-06-10

Good product at a very reasonable price. Keep going better

92 Helpful vote Comments

C***a

Finland

Verified Purchase

5 .0

2024-05-30

I am a very novice user. I just explained what hardware I have and that was it ! The team at l-p.com made sure I had the right part and everything arrrived via international shipping within the week. Very impressed and very happy. Everything just works. Thank You !

35 Helpful vote Comments

A***l

Israel

Verified Purchase

5 .0

2024-03-28

Finding what I needed was easy and the store is well designed.

149 Helpful vote Comments

Patrick Hill

Canada

Verified Purchase

5 .0

2024-03-23

Deployed these modules for an ISP customer serving several commercial buildings. Traffic includes VoIP, surveillance, ERP systems, and daily office workloads. After months of operation, there have been no packet loss issues or abnormal DOM alarms. The simplex LC interface, 1490nm TX / 1550nm RX wavelength combination, and solid OEM compatibility make this a dependable choice for long-distance enterprise fiber links.

15 Helpful vote Comments

h***k

Israel

Verified Purchase

5 .0

2024-03-13

Great seller! I come back

103 Helpful vote Comments

R***h

United States

Verified Purchase

5 .0

2024-02-14

GREAT Customer service! The order arrived surprisingly Fast too. Will be a return customer.

45 Helpful vote Comments

Lily Rogers

Taiwan, Province of China

Verified Purchase

5 .0

2024-02-12

We've been using these in our campus fiber network for several weeks. Every module was recognized by our Cisco switches without warnings. Great choice if you're looking for a Cisco compatible 1G BiDi SFP 60km module. :)

22 Helpful vote Comments

Leah Morgan

Canada

Verified Purchase

5 .0

2024-02-03

OEM compatible and easy to deploy. ^_^

24 Helpful vote Comments

M***n

Colombia

Verified Purchase

5 .0