We're looking to upgrade a massive campus network. Do you offer bulk pricing or project-based discounts if we order 200+ units?

Absolutely! We provide tiered bulk discounts for data center and campus batch deployments. Please reach out to our sales team directly, and we will quote you a highly competitive price for orders over 100 units.

Are these 1G BiDi SFP modules fully compatible with our existing Cisco Catalyst and Juniper EX series switches?

Yes! Our LS-BL55491G-80I transceivers undergo rigorous OEM compatibility testing. They are MSA compliant and work seamlessly with Cisco, Juniper, Arista, and other major switch brands without throwing "unsupported transceiver" errors.

Can I use this transceiver with OM3/OM4 multi-mode fiber for short distances, or is it strictly for single-mode fiber (SMF)?

This specific module is optimized for Single-Mode Fiber (SMF) via a Simplex LC connector to achieve up to 80km transmission. Using it with multi-mode fiber is not recommended, as it will cause severe modal dispersion and link failures.

Breadcrumb: Home; Products; Optic Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 1G BiDi SFP; 183968

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LINK-PP LS-BL55491G-80I 1G SFP BiDi 1550nm-TX/1490nm-RX 80km Simplex LC DOM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL55491G-80I 1G SFP BiDi 1550nm-TX/1490nm-RX 80km Simplex LC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 183968
Price: 17.132 USD
Availability: InStock
Rating: 5 (23 reviews)

Product: LINK-PP LS-BL55491G-80I 1G SFP BiDi 1550nm-TX/1490nm-RX 80km Simplex LC DOM SMF Optical Transceiver Module (Industrial)
SKU: 183968
P/N: LS-BL55491G-80I
Price: $ 19.92
Stock: 1098 in Stock
Sold: 890
Product URL: https://www.l-p.com/products/478901.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

3 Questions

890 Sold

$ 19.92

Free shipping. For wholesale pricing, please contact us directly.

Qty (pcs) :

Unit Price :

$ 19.92

100

$ 18.924

1000

$ 18.327

3000

$ 17.729

6000

$ 17.132

Manufacture: LINK-PP P/N: LS-BL55491G-80I SKU: 183968

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-80I 1G BiDi SFP Specifications

The LINK-PP LS-BL55491G-80I is an industrial-grade 1G BiDi SFP transceiver engineered for rugged environments. Delivering 1.25Gbps gigabit Ethernet data rates, this high-performance optical module ensures seamless long-range communication. Designed with a robust SFP footprint, it operates reliably across extreme temperatures, making it a perfect networking solution for demanding telecommunications and industrial applications.

LINK-PP Part Number	LS-BL55491G-80I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1550nm-TX/1490nm-RX	Max Cable Distance	80km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	0 to +5dBm	RX Power	-26 to -1dBm
Receiver Sensitivity	<-26dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

Key Features of LINK-PP LS-BL55491G-80I 1G BiDi SFP

This powerful 1G BiDi SFP transceiver offers an impressive set of industrial networking features. It utilizes advanced single-mode fiber technology to guarantee optimal signal integrity over extended distances. The hot-pluggable design ensures quick deployment, while standard SFP MSA compliance provides broad hardware compatibility.

LINK-PP LS-BL55491G-80I 1G BiDi SFP Optical Module

The LS-BL55491G-80I optical module is designed for continuous reliability in severe conditions. With its industrial operating temperature range from negative forty to positive eighty-five degrees Celsius, it provides stable gigabit Ethernet connections outdoors.

LS-BL55491G-80I: 1G Connectivity for Smart Grid

Essential for modern infrastructure, this 1G SFP module delivers secure, ultra-reliable data transmission for smart grid systems. Its robust industrial design prevents network downtime, ensuring critical energy distribution networks maintain continuous, high-speed gigabit fiber connectivity.

LS-BL55491G-80I Module with 1550nm-TX and 1490nm-RX Wavelength

Utilizing single fiber bidirectional technology, this optical module transmits at a 1550nm wavelength while receiving at 1490nm. This efficient WDM design maximizes your existing network infrastructure by cutting fiber optic cabling requirements entirely in half.

LS-BL55491G-80I Module Supporting 80km Transmission

Built for exceptional long-haul communication, this 1G SFP transceiver leverages a high-quality DFB laser to achieve up to 80km transmission distances. It easily overcomes signal attenuation, making it ideal for remote enterprise or telecom links.

LS-BL55491G-80I Module with Simplex LC Interface

Designed with a standard simplex LC receptacle, this bidirectional transceiver simplifies single-mode fiber patching. The precision-engineered LC connector ensures minimal insertion loss, guaranteeing optimal optical performance and physical stability for your long-distance fiber networks.

LS-BL55491G-80I Module with DOM for Real-Time Monitoring

Featuring Digital Optical Monitoring capabilities, this smart module allows administrators to track critical diagnostics. Monitor real-time temperature, voltage, laser bias current, and optical power, ensuring your 1.25Gbps fiber link remains healthy and preventing unexpected failures.

LINK-PP LS-BL55491G-80I 1G SFP Certification

The LINK-PP LS-BL55491G-80I holds comprehensive industry certifications, guaranteeing complete compliance with international telecommunication standards, safety regulations, and environmental directives for safe, dependable global network deployments.

LS-BL55491G-80I Quality Testing Program

Every single industrial optical module undergoes a comprehensive quality testing program. We simulate extreme field conditions to guarantee flawless signal integrity and absolute reliability before any shipment.

LS-BL55491G-80I Quality Certifications

This gigabit transceiver is fully RoHS compliant and satisfies strict Class I laser safety requirements. These stringent quality certifications ensure environmentally responsible and completely safe optical operations.

LS-BL55491G-80I Certified for Reliable Host-Device Compatibility

Precisely engineered to SFP MSA and SFF-8472 standards, this transceiver is certified for extensive compatibility. It seamlessly integrates with various mainstream industrial switches, routers, and networking hardware.

Rigorous Testing Ensures Reliable SFP Performance

Our advanced laboratory executes strict diagnostic evaluations on every fiber module, securing unmatched data transmission stability and exceptional optical network durability.

Rigorous Testing Ensures Reliable Transceiver Performance

Optical Spectrum Test

We analyze the DFB laser spectrum to ensure exact 1550nm wavelength precision.

Eye Pattern Test

Strict eye diagram evaluations confirm clear signal modulation and exceptional gigabit data integrity.

Bit Error Rate Test

Continuous data transmission tests verify zero packet loss and optimal network link reliability.

Temperature Test

Extreme thermal cycling verifies stable operations across the entire industrial temperature range.

Product Shipping for LINK-PP LS-BL55491G-80I 1G SFP

We provide secure, rapid global shipping solutions, guaranteeing your industrial gigabit optical transceivers arrive safely, promptly, and in pristine operational condition everywhere.

Anti-Static Protective Packaging

Each transceiver is sealed in premium ESD bags preventing electrical damage.

Shock-Resistant Transport Protection

Custom-molded protective trays eliminate transit vibrations and physical impact risks.

Fast Order Processing and Dispatch

Streamlined warehousing ensures immediate dispatch and rapid deployment for your networks.

Global Logistics and International Delivery

Partnered with top couriers for reliable, trackable worldwide product distribution.

LINK-PP LS-BL55491G-80I 1G SFP Usage Demonstration

Experience seamless deployment with our plug-and-play gigabit transceiver. Simply insert the module into your industrial switch, connect the simplex LC single-mode fiber, and establish an instant, secure, high-speed 80km optical connection without requiring any complex configuration.

LS-BL55491G-80I Technical Support

LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable LS-BL55491G-80I modules based on network architecture and application requirements.

Compatibility Verification Support

Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.

Deployment & Installation Assistance

Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.

LINK-PP LS-BL55491G-80I 1G SFP After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15-day no-reason return and refund

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free repair services for manufacturing defects throughout the warranty period

Warranty exclusions and conditions apply

Model Comparison Table

	Current Model LS-BL55491G-80I	LS-BL55491G-10I	LS-BL55491G-A5I	LS-BL55491G-A6I	LS-BL55491G-A0I	LS-BL55491G-A2I

Compatible	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP
Data Rate (Max)	1.25Gbps	1.25Gbps	1.25Gbps	1.25Gbps	1.25Gbps	1.25Gbps
Wavelength	1550nm-TX/1490nm-RX	1550nm-TX/1490nm-RX	1550nm-TX/1490nm-RX	1550nm-TX/1490nm-RX	1550nm-TX/1490nm-RX	1550nm-TX/1490nm-RX
Connector	Simplex LC	Simplex LC	Simplex LC	Simplex LC	Simplex LC	Simplex LC
Cable Distance (Max)	80km	10km	150km	160km	100km	120km
Cable Type	SMF	SMF	SMF	SMF	SMF	SMF
TX Power	0 to +5dBm	0 to +5dBm	0 to +5dBm	0 to +5dBm	0 to +5dBm	0 to +5dBm
Receiver Sensitivity	-26 to -1dBm	-26 to -1dBm	-28 to -1dBm	-28 to -1dBm	-28 to -1dBm	-28 to -1dBm
Operating Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Form Factor	SFP	SFP	SFP	SFP	SFP	SFP
Transmitter Type	DFB	DFB	DFB	DFB	DFB	DFB
Receiver Type	PIN	PIN	APD	APD	PIN	APD
DOM Support	Yes	Yes	Yes	Yes	Yes	Yes
Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant	SFP MSA、SFF-8472	SFP MSA、SFF-8472	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Questions & Answers
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Q: We're looking to upgrade a massive campus network. Do you offer bulk pricing or project-based discounts if we order 200+ units? By B***n on 2026-04-14

A: Absolutely! We provide tiered bulk discounts for data center and campus batch deployments. Please reach out to our sales team directly, and we will quote you a highly competitive price for orders over 100 units. By admin on 2026-04-14
Q: Are these 1G BiDi SFP modules fully compatible with our existing Cisco Catalyst and Juniper EX series switches? By D***n on 2025-08-29

A: Yes! Our LS-BL55491G-80I transceivers undergo rigorous OEM compatibility testing. They are MSA compliant and work seamlessly with Cisco, Juniper, Arista, and other major switch brands without throwing "unsupported transceiver" errors. By admin on 2025-08-29
Q: Can I use this transceiver with OM3/OM4 multi-mode fiber for short distances, or is it strictly for single-mode fiber (SMF)? By A***l on 2025-07-02

A: This specific module is optimized for Single-Mode Fiber (SMF) via a Simplex LC connector to achieve up to 80km transmission. Using it with multi-mode fiber is not recommended, as it will cause severe modal dispersion and link failures. By admin on 2025-07-02

Customer Reviews
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N***z

Czech Republic

Verified Purchase

5 .0

2026-05-13

Cost-effective gigabit fiber module. Will buy more.

214 Helpful vote Comments

L***r

Bolivia

Verified Purchase

5 .0

2026-04-02

As a network engineer, I love the DOM feature on this 80km SFP. It integrated perfectly with our monitoring stack. OEM compatibility across our mixed Cisco and Juniper campus fiber network is phenomenal.

73 Helpful vote Comments

B***s

Bolivia

Verified Purchase

5 .0

2026-03-30

Flawless OEM compatibility with my Cisco switches. :)

37 Helpful vote Comments

A***s

Ireland

Verified Purchase

5 .0

2026-02-28

Plug and play 1.25Gbps performance. Very satisfied.

96 Helpful vote Comments

R***r

Mexico

Verified Purchase

5 .0

2026-02-27

Solid 1G BiDi SFP for our campus!

144 Helpful vote Comments

E***n

Republic of Korea

Verified Purchase

5 .0

2026-02-19

Reached 80km without any signal drops. Awesome!

144 Helpful vote Comments

J***n

Ecuador

Verified Purchase

4 .0

2025-12-24

The industrial SFP transceiver works great outdoors, just wish shipping was one day faster.

33 Helpful vote Comments

J***s

Denmark

Verified Purchase

5 .0

2025-12-01

Tested this 1G SFP BiDi on multiple switch brands. OEM compatibility is strictly on point.

58 Helpful vote Comments

J***l

Germany

Verified Purchase

5 .0

2025-11-19

We used this 1550nm-TX/1490nm-RX simplex LC module to bridge two remote data centers. The 1.25Gbps connection is rock solid over SMF. Great bulk pricing and TCO for massive machine room batch deployments.

108 Helpful vote Comments

M***s

Sweden

Verified Purchase

5 .0

2025-10-21

The 1550nm-TX/1490nm-RX pairing saved us from running extra fiber strands for our server room.

62 Helpful vote Comments

D***n

Switzerland

Verified Purchase

5 .0

2025-10-17

Reliable SMF optical transceiver for cell site backhaul.

56 Helpful vote Comments

D***k

France

Verified Purchase

5 .0

2025-09-19

Perfect industrial SFP transceiver for outdoor cabinets.

82 Helpful vote Comments

M***n

Switzerland

Verified Purchase

5 .0

2025-06-22

Simplex LC connects perfectly. No issues here.

127 Helpful vote Comments

D***r

Singapore

Verified Purchase

5 .0

2025-06-22

Upgraded our park's optical network using these 80km SFP modules. Excellent DDM monitoring!

105 Helpful vote Comments

C***n

Chile

Verified Purchase

5 .0

2025-06-16

DOM support let us easily monitor the -40 to 85°C working temps in real-time.

114 Helpful vote Comments

M***n

Costa Rica

Verified Purchase

5 .0

2025-06-16

Needed a wide-temp SMF optical transceiver for a harsh factory environment. This works wonders.

110 Helpful vote Comments

C***z

Mexico

Verified Purchase

5 .0

2025-05-13

Perfect for my home NAS gigabit fiber setup. Simplex LC makes cabling so much cleaner.

213 Helpful vote Comments

D***s

United States

Verified Purchase

5 .0

2025-04-09

Deployed 50 of these 1G BiDi SFPs for a cell site backhaul project. The industrial -40 to 85°C rating is a lifesaver for our outdoor cabinets. Zero TX/RX errors logged so far!

117 Helpful vote Comments

S***t

Portugal

Verified Purchase

5 .0

2025-04-04

Tested these industrial SFP transceivers for an outdoor IP camera ring network. They survived extreme summer heat effortlessly. The single-mode fiber efficiency combined with DOM diagnostics makes remote maintenance an absolute breeze.

31 Helpful vote Comments

M***z

Mexico

Verified Purchase

5 .0

2025-01-14

DOM support is highly accurate. Great buy!

134 Helpful vote Comments

N***l

Ecuador

Verified Purchase

5 .0

2024-12-21

We deployed a batch of these industrial SFP transceivers for smart grid data transmission. ⚡

90 Helpful vote Comments

L***n

Netherlands

Verified Purchase

5 .0

2024-10-22

1550nm-TX/1490nm-RX works flawlessly on our SMF links.

192 Helpful vote Comments

S***r

Hong Kong

Verified Purchase

5 .0

2024-10-15

Withstood -40°C in our remote outdoor enclosure!

131 Helpful vote Comments

Verified Purchase

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LINK-PP LS-BL49551G-A5C 1G SFP BiDi 1490nm-TX/1550nm-RX 150km DOM Simplex LC SMF Optical Transceiver Module

25 Reviews
|
2.3K Sold

$ 32 ~~$ 0.00~~

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LINK-PP

LS-BL49551G-A2I | 120km

LINK-PP LS-BL49551G-A2I 1G BiDi SFP 1490nm-TX/1550nm-RX 120km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

47 Reviews
|
1.4K Sold

$ 31.5 ~~$ 0.00~~

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LINK-PP

LS-BL49551G-A0I | 100km

LINK-PP LS-BL49551G-A0I 1G BiDi SFP 1490nm-TX/1550nm-RX 100km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

28 Reviews
|
1.1K Sold

$ 29.5 ~~$ 0.00~~

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LINK-PP

LS-BL55491G-A2C | 120km

LINK-PP LS-BL55491G-A2C 1G SFP BiDi 1550nm-TX/1490nm-RX 120km DOM Simplex LC SMF Optical Transceiver Module

41 Reviews
|
890 Sold

$ 29.05 ~~$ 0.00~~

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LINK-PP

LS-BL49551G-A2C | 120km

LINK-PP LS-BL49551G-A2C 1G SFP BiDi 1490nm-TX/1550nm-RX 120km Simplex LC DOM SMF Optical Transceiver Module

30 Reviews
|
770 Sold

$ 29 ~~$ 0.00~~

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LINK-PP

LS-BL49551G-A0C | 100km

LINK-PP LS-BL49551G-A0C 1G BiDi SFP 1490nm-TX/1550nm-RX 100km DOM Simplex LC SMF Optical Transceiver Module

27 Reviews
|
1.3K Sold

$ 28.5 ~~$ 0.00~~

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LINK-PP

LS-BL55491G-A0C | 100km

LINK-PP LS-BL55491G-A0C 1G SFP BiDi 1550nm-TX/1490nm-RX 100km Simplex LC DOM SMF Optical Transceiver Module

22 Reviews
|
1.9K Sold

$ 27.1 ~~$ 0.00~~

{"pid":481818,"minimum_ordered_quantity":1,"skulist":[{"pskuid":184888,"cid":752,"pid":481818,"sku":"184888","psvid1":271755,"psvid2":271756,"psvid3":0,"psvid4":0,"left_num":1100,"price":"27.100","strike_price":"0.000","innercode":"","addtime":"2024-10-20 06:52:39","uptime":"2024-11-08 00:47:24","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"27.1","subtotal":27.1}]}
LINK-PP

LS-BL49551G-10I | 10km

LINK-PP LS-BL49551G-10I 1G BiDi SFP 1490nm-TX/1550nm-RX 10km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

30 Reviews
|
1.9K Sold

$ 24 ~~$ 0.00~~

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