Does this require a standard Simplex LC connector on single-mode fiber for the full 60km?

That is correct. For the fiber adapter type, this module features a Simplex LC optical interface. You simply need a standard Single-Mode Fiber (SMF) patch cable to achieve the maximum transmission distance of 60km without any signal degradation.

Hi, please checking if this LS-BL31551G-60I module plays nice with Cisco and Ubiquiti gear? Doing a campus upgrade soon.

Yes! The transceiver features seamless equipment compatibility and interoperability. It is strictly MSA compliant and has passed extensive multi-brand switch compatibility tests, ensuring it works perfectly with Cisco, Ubiquiti, Juniper, and other major OEM network equipment.

Are these units fully compliant with industry standards for Fast Ethernet and Gigabit Fibre Channel?

Yes, they are. The modules are engineered to meet stringent global industry compliance and standards. They fully support IEEE 802.3z for 1.25G Gigabit Ethernet, 1.063Gbps Fibre Channel, and hold CE, FCC, and RoHS certifications.

If we grab 500+ pieces for a data center mass deployment, can we get a better B2B rate?

Absolutely. We offer excellent bulk procurement discounts for enterprise clients. If you are looking at large-scale deployments, please reach out to our sales team directly, and we will provide a customized, highly competitive quote tailored to your project.

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LINK-PP LS-BL31551G-60I 1.25G SFP BiDi 1310nm-TX/1550nm-RX 60km Simplex LC DDM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL31551G-60I 1.25G SFP BiDi 1310nm-TX/1550nm-RX 60km Simplex LC DDM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 201978
Price: 14.19 USD
Availability: InStock
Rating: 4.9 (46 reviews)

# 201978

Product: LINK-PP LS-BL31551G-60I 1.25G SFP BiDi 1310nm-TX/1550nm-RX 60km Simplex LC DDM SMF Optical Transceiver Module (Industrial)
SKU: 201978
P/N: LS-BL31551G-60I
Price: $ 16.5
Stock: 150 in Stock
Sold: 1
Product URL: https://www.l-p.com/products/491462.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

46 Reviews

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$ 15.675

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$ 15.18

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$ 14.685

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Manufacture: LINK-PP

P/N: LS-BL31551G-60I

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-BL31551G-60I 1.25G BiDi SFP Specifications

The LINK-PP LS-BL31551G-60I is a high-performance 1.25G BiDi SFP transceiver engineered for robust industrial applications. This single-mode fiber optical module seamlessly supports Gigabit Ethernet and 1.063Gbps Fiber Channel speeds. Delivering exceptional reliability across harsh environments, this hot-pluggable SFP footprint ensures rapid networking upgrades, minimal data latency, and outstanding operational stability.

LINK-PP Part Number	LS-BL31551G-60I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1310nm-TX/1550nm-RX	Max Cable Distance	60km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-5 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	<-24dBm	DDM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Does this require a standard Simplex LC connector on single-mode fiber for the full 60km? By D***n on 2026-06-07

A: That is correct. For the fiber adapter type, this module features a Simplex LC optical interface. You simply need a standard Single-Mode Fiber (SMF) patch cable to achieve the maximum transmission distance of 60km without any signal degradation. By admin on 2026-06-07
Q: Hi, please checking if this LS-BL31551G-60I module plays nice with Cisco and Ubiquiti gear? Doing a campus upgrade soon. By R***s on 2026-03-19

A: Yes! The transceiver features seamless equipment compatibility and interoperability. It is strictly MSA compliant and has passed extensive multi-brand switch compatibility tests, ensuring it works perfectly with Cisco, Ubiquiti, Juniper, and other major OEM network equipment. By admin on 2026-03-19
Q: Are these units fully compliant with industry standards for Fast Ethernet and Gigabit Fibre Channel? By D***z on 2026-03-16

A: Yes, they are. The modules are engineered to meet stringent global industry compliance and standards. They fully support IEEE 802.3z for 1.25G Gigabit Ethernet, 1.063Gbps Fibre Channel, and hold CE, FCC, and RoHS certifications. By admin on 2026-03-16
Q: If we grab 500+ pieces for a data center mass deployment, can we get a better B2B rate? By T***r on 2026-02-21

A: Absolutely. We offer excellent bulk procurement discounts for enterprise clients. If you are looking at large-scale deployments, please reach out to our sales team directly, and we will provide a customized, highly competitive quote tailored to your project. By admin on 2026-02-21

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M***e

Greece

Verified Purchase

5 .0

2026-06-10

Plug and play! BiDi 1310nm/1550nm works exactly as expected for my home Gigabit NAS.

176 Helpful vote Comments

L***e

Philippines

Verified Purchase

5 .0

2026-05-22

Great industrial SFP module! Handles the heat in our non-A/C warehouse just fine.

97 Helpful vote Comments

P***k

Portugal

Verified Purchase

5 .0

2026-05-03

Handled -40°C easily. Very reliable!

155 Helpful vote Comments

S***r

Ireland

Verified Purchase

5 .0

2026-03-30

We use these for base station backhaul links in extreme weather (-40°C). The 1310nm-TX/1550nm-RX split over single-mode fiber is highly stable. Real lifesaver for industrial IoT ops.

211 Helpful vote Comments

P***n

Switzerland

Verified Purchase

5 .0

2026-03-07

Tested the 1.25G SFP BiDi transceivers across multi-brand switches including Juniper and Ubiquiti. Seamless MSA OEM compatibility. Built-in DOM tracks the -40 to 85°C operating temperature perfectly. Highly recommend.

109 Helpful vote Comments

J***s

Taiwan, Province of China

Verified Purchase

5 .0

2026-03-06

Works beautifully in our campus fiber network.

140 Helpful vote Comments

P***n

Bolivia

Verified Purchase

5 .0

2026-02-20

Excellent Gigabit Ethernet module! ^^

152 Helpful vote Comments

P***n

Argentina

Verified Purchase

4 .0

2026-01-11

Packaging was slightly dented upon arrival, but the 1.25G industrial SFP works perfectly.

215 Helpful vote Comments

E***n

Colombia

Verified Purchase

5 .0

2025-11-08

Cost-effective solution for our enterprise networking. LC fiber interface snapped in with zero issues.

156 Helpful vote Comments

C***y

Argentina

Verified Purchase

5 .0

2025-09-26

Fast and easy to find the product I was looking for and no annoying pop up while I filled in the required data.

102 Helpful vote Comments

R***r

Dominican Republic

Verified Purchase

5 .0

2025-08-22

Upgraded our data center mass deployment with these Simplex LC modules. Reaching 60km over SMF without signal drops is impressive. Perfect for linking our remote NAS backup servers.

149 Helpful vote Comments

A***z

Czech Republic

Verified Purchase

5 .0

2025-07-17

Quick shipping and the Fast Ethernet optical performance is top tier. Will buy again!

53 Helpful vote Comments

N***g

Macao

Verified Purchase

5 .0

2025-07-13

Great website, great selection at the cheapest prices I can find for the products they have.Link-pp always provides easy to use and reliable service.

80 Helpful vote Comments

M***e

United Kingdom

Verified Purchase

4 .0

2025-07-07

Tested on the following.

56 Helpful vote Comments

C***n

Israel

Verified Purchase

5 .0

2025-07-05

Outstanding service. Not my first order and certainly not my last. Transceiver guaranteed to work and it always does.

46 Helpful vote Comments

J***z

India

Verified Purchase

5 .0

2025-06-23

Perfect 60km SMF transmission distance!

110 Helpful vote Comments

W***l

United Kingdom

Verified Purchase

5 .0

2025-06-09

Flawless 1.25G connection for outdoor cabinet setups. Wide temp range is a huge plus! ❄️

141 Helpful vote Comments

A***e

Germany

Verified Purchase

5 .0

2025-06-04

Deployed these LS-BL31551G-60I modules for a 60km campus fiber networking project. DDM monitoring is incredibly accurate, and they sync flawlessly with our Cisco core switches. Great for outdoor cabinets!

169 Helpful vote Comments

S***e

Ecuador

Verified Purchase

5 .0

2025-05-19

Solid 1.25G industrial SFP transceiver.

133 Helpful vote Comments

R***s

Venezuela

Verified Purchase

5 .0

2025-05-14

Accurate 1310nm-TX/1550nm-RX wavelengths.

91 Helpful vote Comments

J***s

Poland

Verified Purchase

5 .0

2025-05-04

Solid OEM compatibility. Fired right up on our MSA compliant factory floor switches.

60 Helpful vote Comments

A***a

Taiwan, Province of China

Verified Purchase

5 .0

2025-03-04

Had just what I needed and an honest shipping policy. Thanks!

36 Helpful vote Comments

T***g

United States

Verified Purchase

5 .0

2025-01-17

Units worked just as they said, had no issues so far.

42 Helpful vote Comments

A***a

Singapore

Verified Purchase

5 .0

2025-01-15

You can trust in l-p.com, cause you will always get your order promptly. Love them.

15 Helpful vote Comments

J***k

Belgium

Verified Purchase

5 .0

2024-12-14

Flawless multi-brand switch compatibility test.

84 Helpful vote Comments

M***s

Czech Republic

Verified Purchase

5 .0

2024-12-04

SFP BiDi 60km range is real. DDM stats look great in our monitoring dashboard.

198 Helpful vote Comments

A***s

Indonesia

Verified Purchase

5 .0

2024-11-09

Great DDM support and easy to install.

88 Helpful vote Comments

I***e

Germany

Verified Purchase

5 .0

2024-10-25

The Optical Transceiver Module was packed very well. It works as expected.

56 Helpful vote Comments

V***l

Maldives

Verified Purchase

5 .0

2024-07-01

Price is less than half of what Pulse charges for their brand. But both the quality and the performance are the same. Why not choose the cheaper ones? Besides,the sales person is very knowledgable and helpful.

54 Helpful vote Comments

M***u

United States

Verified Purchase

5 .0

2023-11-02

Products and services are very good

96 Helpful vote Comments

C***k

Republic of Korea

Verified Purchase

5 .0

2023-09-29

Orders are have always been correct every time I have ordered from here, which has been several times. High quality products and they are always in-stock. Website and check is streamlined perfectly.

54 Helpful vote Comments

D***n

United States

Verified Purchase

5 .0

2023-09-22

Came Fast and in good condition

94 Helpful vote Comments

M***s

Norway

Verified Purchase

5 .0