Is this transceiver strictly for Single-Mode Fiber (SMF), or can I use it with my existing OM3 multi-mode fiber?

This transceiver is designed strictly for Single-Mode Fiber (SMF) using a Simplex LC interface to achieve its 10km transmission distance. It is not compatible with multi-mode fiber setups.

We're looking at a massive campus network upgrade and need about 500 units. Do you guys offer B2B bulk pricing or tiered discounts?

Yes, we do! For large batch procurements, we provide competitive tiered pricing. You can apply our specialized promo codes at checkout or contact our sales team directly to lock in the best wholesale rate for your project.

Are these optical modules certified for enterprise data center use? We need strict adherence to industry standards.

Definitely. The LS-BL55491G-10I is fully MSA compliant and meets strict international networking standards, including Fast Ethernet and Gigabit Fibre Channel protocols. It also features standard DOM/DDM for real-time diagnostic monitoring.

We need to deploy these in unventilated outdoor street cabinets in Arizona. Can this industrial version truly handle the extreme heat?

Yes, it is built exactly for that. This industrial-grade transceiver operates flawlessly in extreme environments from -40°C up to a scorching 85°C, making it perfect for harsh outdoor nodes, cell towers, and rugged edge networks.

Hello sir, will the LS-BL55491G-10I play nice with a mixed environment of Cisco Catalyst and Ubiquiti EdgeSwitches? Need to know before dropping a big order.

Absolutely! This 1.25G BiDi SFP is 100% MSA compliant, ensuring seamless plug-and-play interoperability across major OEM brands like Cisco, Ubiquiti, MikroTik, and Juniper without throwing any "unsupported transceiver" errors.

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LINK-PP LS-BL55491G-10I 1.25G SFP BiDi 1550nm-TX/1490nm-RX 10km Simplex LC DOM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL55491G-10I 1.25G SFP BiDi 1550nm-TX/1490nm-RX 10km Simplex LC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 184729
Price: 15.412 USD
Availability: InStock
Rating: 5 (23 reviews)

# 184729

Product: LINK-PP LS-BL55491G-10I 1.25G SFP BiDi 1550nm-TX/1490nm-RX 10km Simplex LC DOM SMF Optical Transceiver Module (Industrial)
SKU: 184729
P/N: LS-BL55491G-10I
Price: $ 17.92
Stock: 520 in Stock
Sold: 1.5K
Product URL: https://www.l-p.com/products/481692.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

23 Reviews

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$ 17.024

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$ 16.487

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Manufacture: LINK-PP

P/N: LS-BL55491G-10I

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-BL55491G-10I 1.25G BiDi SFP Specifications

The LINK-PP LS-BL55491G-10I 1.25G BiDi SFP is an industrial-grade optical transceiver designed for robust Gigabit Ethernet applications. Operating reliably in extreme temperatures from -40°C to 85°C, this high-performance SFP module ensures seamless data transmission over single-mode fiber. It integrates advanced DFB laser technology and PIN receivers for unmatched optical network efficiency.

LINK-PP Part Number	LS-BL55491G-10I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1550nm-TX/1490nm-RX	Max Cable Distance	10km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	0 to +5dBm	RX Power	-26 to -1dBm
Receiver Sensitivity	<-24dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Is this transceiver strictly for Single-Mode Fiber (SMF), or can I use it with my existing OM3 multi-mode fiber? By K***n on 2025-11-22

A: This transceiver is designed strictly for Single-Mode Fiber (SMF) using a Simplex LC interface to achieve its 10km transmission distance. It is not compatible with multi-mode fiber setups. By admin on 2025-11-22
Q: We're looking at a massive campus network upgrade and need about 500 units. Do you guys offer B2B bulk pricing or tiered discounts? By L***s on 2025-11-22

A: Yes, we do! For large batch procurements, we provide competitive tiered pricing. You can apply our specialized promo codes at checkout or contact our sales team directly to lock in the best wholesale rate for your project. By admin on 2025-11-22
Q: Are these optical modules certified for enterprise data center use? We need strict adherence to industry standards. By M***e on 2025-11-19

A: Definitely. The LS-BL55491G-10I is fully MSA compliant and meets strict international networking standards, including Fast Ethernet and Gigabit Fibre Channel protocols. It also features standard DOM/DDM for real-time diagnostic monitoring. By admin on 2025-11-19
Q: We need to deploy these in unventilated outdoor street cabinets in Arizona. Can this industrial version truly handle the extreme heat? By M***s on 2025-08-28

A: Yes, it is built exactly for that. This industrial-grade transceiver operates flawlessly in extreme environments from -40°C up to a scorching 85°C, making it perfect for harsh outdoor nodes, cell towers, and rugged edge networks. By admin on 2025-08-28
Q: Hello sir, will the LS-BL55491G-10I play nice with a mixed environment of Cisco Catalyst and Ubiquiti EdgeSwitches? Need to know before dropping a big order. By D***z on 2025-07-30

A: Absolutely! This 1.25G BiDi SFP is 100% MSA compliant, ensuring seamless plug-and-play interoperability across major OEM brands like Cisco, Ubiquiti, MikroTik, and Juniper without throwing any "unsupported transceiver" errors. By admin on 2025-07-30

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S***l

France

Verified Purchase

5 .0

2026-05-01

Excellent SMF module for rugged outdoor setups.

198 Helpful vote Comments

A***g

Spain

Verified Purchase

5 .0

2026-04-21

The DOM feature works as advertised. :)

189 Helpful vote Comments

A***s

Spain

Verified Purchase

5 .0

2026-03-09

Outstanding industrial temp range. Handles our unventilated warehouse telecom enclosure flawlessly.

186 Helpful vote Comments

L***n

Bolivia

Verified Purchase

5 .0

2026-02-11

Perfect OEM switch compatibility, no issues.

149 Helpful vote Comments

S***t

Switzerland

Verified Purchase

5 .0

2026-01-29

Deployed these 1.25G BiDi modules in our outdoor cabinets across the Texas campus network. With -40 to 85°C operating temp and reliable DDM, they easily survived the harsh summer heat!

64 Helpful vote Comments

B***r

Poland

Verified Purchase

5 .0

2026-01-06

Super simple plug and play operation! (⌐■_■) ⚙️

55 Helpful vote Comments

B***r

Norway

Verified Purchase

5 .0

2025-12-14

Reliable 1490nm-RX receiver sensitivity. Perfect!

41 Helpful vote Comments

L***h

Ecuador

Verified Purchase

5 .0

2025-12-09

MSA compliant and works flawlessly. Highly recommended! xD

153 Helpful vote Comments

J***k

Bolivia

Verified Purchase

5 .0

2025-11-25

Best industrial SFP I have bought.

131 Helpful vote Comments

L***z

Czech Republic

Verified Purchase

5 .0

2025-11-15

Awesome 1.25G SFP for remote home NAS connections using single-mode fiber.

181 Helpful vote Comments

P***n

Canada

Verified Purchase

5 .0

2025-11-02

As a network engineer, I highly recommend this LINK-PP transceiver. DDM monitoring allows precise optical power tracking. Pushed it to 9km for an outdoor IP camera network, zero latency issues!

155 Helpful vote Comments

M***r

Russian Federation

Verified Purchase

5 .0

2025-08-29

Solid Gigabit Fibre Channel module. Synced instantly with our edge router.

192 Helpful vote Comments

M***r

Japan

Verified Purchase

5 .0

2025-07-31

Great price for genuine LINK-PP optics.

52 Helpful vote Comments

A***l

Greece

Verified Purchase

5 .0

2025-07-23

Booted right up on my MikroTik switches without any compatibility errors. ✅

76 Helpful vote Comments

S***n

Indonesia

Verified Purchase

5 .0

2025-07-10

Perfect 10km reach for our remote industrial control networks. Great link stability.

126 Helpful vote Comments

C***n

Colombia

Verified Purchase

5 .0

2025-06-22

Top notch 1.25G BiDi optical transceivers!

59 Helpful vote Comments

D***n

Canada

Verified Purchase

5 .0

2025-04-27

The Simplex LC connector saves fiber strands in our server rack setup.

128 Helpful vote Comments

S***s

Peru

Verified Purchase

4 .0

2025-03-23

Delivery took an extra day. The 1.25G BiDi SFPs perform great though.

66 Helpful vote Comments

M***l

Czech Republic

Verified Purchase

5 .0

2025-03-22

Flawless DDM integration! Reading real-time temp and voltage is super easy.

179 Helpful vote Comments

D***r

Ecuador

Verified Purchase

5 .0

2025-03-14

Tested the 10km transmission over SMF for our enterprise NAS upgrade. The Simplex LC interface is space-saving. Zero packet loss over MSA compliant protocols. Excellent industrial SFP choice.

172 Helpful vote Comments

A***z

Poland

Verified Purchase

5 .0

2025-02-05

Fast Ethernet links established immediately. The 1550nm-TX laser is very stable. ⚡

117 Helpful vote Comments

S***n

Ukraine

Verified Purchase

5 .0

2025-01-24

We did a batch deployment for base station backhaul using this 1550nm-TX/1490nm-RX transceiver. Flawless OEM compatibility with our mixed Cisco and Juniper switches. Total cost of ownership is incredibly low.

109 Helpful vote Comments

A***n

Philippines

Verified Purchase

5 .0

2024-10-16

Solid 1.25G bidirectional link speed.

107 Helpful vote Comments