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.

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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)

# 183968

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: 1100 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

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$ 18.924

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$ 18.327

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$ 17.729

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Manufacture: LINK-PP

P/N: LS-BL55491G-80I

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

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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

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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