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LS-BL55491G-A6C 1g bidi sfp 1550nm-tx 1490nm-rx 160km simplex lc dom smf transceiver module
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LINK-PP LS-BL55491G-A6C 1G BiDi SFP 1550nm-TX/1490nm-RX 160km Simplex LC DOM SMF Transceiver Module

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Product summary

Product
LINK-PP LS-BL55491G-A6C 1G BiDi SFP 1550nm-TX/1490nm-RX 160km Simplex LC DOM SMF Transceiver Module
SKU
201975
P/N
LS-BL55491G-A6C
Price
$ 58
Stock
120 in Stock
Sold
680
Product URL
https://www.l-p.com/products/491459.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
47 Reviews
3 Questions
680 Sold
$ 58 ( 0% OFF )
Free shipping. For wholesale pricing, please contact us directly.
Qty (pcs) :
Unit Price :
1
$ 58
100
$ 55.1
1000
$ 53.36
3000
$ 51.62
6000
$ 49.88
Manufacture: LINK-PP P/N: LS-BL55491G-A6C SKU: 201975
Compatible:
Cisco
LINK-PP
Arista
Brocade
Dell
Extreme
FS
Generic
H3C
HPE Aruba
Intel
Juniper
NVIDIA/Mellanox
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
Shipping:
Free Shipping
to United States via FedEx
Estimated delivery time : 3 - 10 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
Stock:
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Quantity:
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Total Price:
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LINK-PP LS-BL55491G-A6C 1G BiDi SFP Specifications

The LINK-PP LS-BL55491G-A6C is a high-performance 1.25Gbps BiDi SFP transceiver perfectly engineered for extreme long-haul telecommunications. Operating seamlessly over single-mode fiber, this commercial-grade optical module ensures exceptional Gigabit Ethernet connectivity up to 160km. Featuring a premium 1550nm DFB laser and APD photodiode, it delivers cost-effective, robust performance for extended WDM network deployments.

LINK-PP Part Number LS-BL55491G-A6C Vendor Name LINK-PP
Form Factor SFP Max Data Rate 1.25Gbps
Wavelength 1550nm-TX/1490nm-RX Max Cable Distance 160km
Connector Simplex LC Media SMF
Transmitter Type
 DFB Receiver Type
 APD
TX Power 0 to +5dBm RX Power -28 to -1dBm
Receiver Sensitivity <-34dBm DOM Support Yes
Operating Temperature Range 0 to 70°C Protocols

SFP MSA、SFF-8472

Key Features of LINK-PP LS-BL55491G-A6C 1G BiDi SFP

This premium transceiver combines advanced 1550nm DFB laser technology and high-sensitivity APD receivers to deliver outstanding optical networking performance. Designed specifically for single-mode fiber infrastructure, the commercial-grade module offers exceptional single-fiber bidirectional transmission capabilities, low power consumption, and highly reliable Gigabit Ethernet data links.

LINK-PP LS-BL55491G-A6C 1G BiDi SFP Optical Module

Designed for superior efficiency, this hot-pluggable 1G BiDi SFP optical module seamlessly upgrades Gigabit Ethernet and Fiber Channel systems. The compact form factor complies with SFP MSA standards, ensuring easy installation and maximum hardware density for networking equipment.

LS-BL55491G-A6C: 1G Connectivity for Backbone Transport Links

Delivering stable 1G connectivity, this transceiver is the ideal solution for expanding backbone transport links and metropolitan area networks. Its extended reach capability dramatically reduces the need for expensive repeater stations across vast telecommunication infrastructures.

LS-BL55491G-A6C Module with 1550nm-TX and 1490nm-RX Wavelength

Utilizing advanced wavelength division multiplexing technology, the module operates with a 1550nm-TX and 1490nm-RX wavelength configuration. This single-fiber bidirectional transmission significantly minimizes cabling costs while maximizing the existing optical bandwidth capacity of your network architecture.

LS-BL55491G-A6C Module Supporting 160km Transmission

Engineered with a powerful DFB laser and high-sensitivity APD receiver, this optical transceiver supports an incredible 160km transmission distance. This exceptional optical budget ensures reliable signal integrity over extreme long-distance single-mode fiber routes without degradation.

LS-BL55491G-A6C Module with Simplex LC Interface

Built with an industry-standard simplex LC interface, this bidirectional transceiver provides secure and precise fiber optic connections. The single LC receptacle design simplifies patch cord management while maintaining highly durable and low-loss optical coupling performance.

LS-BL55491G-A6C Module with DOM for Real-Time Monitoring

Fully compliant with SFF-8472, the integrated digital diagnostic monitoring functionality provides administrators with real-time tracking of critical parameters. Network operators can easily monitor temperature, voltage, laser bias current, and optical power to ensure continuous reliability.

LINK-PP LS-BL55491G-A6C 1G SFP Certification

Every LINK-PP 1G optical transceiver undergoes comprehensive compliance assessments to guarantee global market readiness, ensuring outstanding operational safety, environmental responsibility, and superior electromagnetic interference protection.

Optical Transceivers Testing

LS-BL55491G-A6C Quality Testing Program

Our rigorous quality testing program evaluates every single module through extreme conditions, verifying superior laser safety, structural integrity, and long-term durability for demanding telecom environments.

LS-BL55491G-A6C Quality Certifications

This commercial-grade SFP module proudly holds CE, FCC, UKCA, UL, and REACH certifications, demonstrating full compliance with strict international safety, electromagnetic, and environmental sustainability standards.

ISO9001
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
ISO14001
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
RECH
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
CE
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
FCC
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
UKCA
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.

LS-BL55491G-A6C Certified for Reliable Host-Device Compatibility

Strictly adhering to SFP Multi-Source Agreement specifications, this certified hot-pluggable transceiver guarantees flawless host-device compatibility and seamless integration across a wide range of branded switches.

Rigorous Testing Ensures Reliable SFP Performance

Advanced laboratory testing procedures validate the operational stability of every module, ensuring optimal performance for critical high-speed Gigabit network deployments.

Optical

Optical Spectrum Test

Precision equipment verifies exact wavelength stability and excellent side-mode suppression ratio performance.

Optical

Eye Pattern Test

Comprehensive optical eye diagram evaluations confirm optimal signal quality and minimal jitter interference.

Optical

Bit Error Rate Test

Continuous high-speed data transmission analysis guarantees virtually zero data loss across extensive fiber distances.

Optical

Temperature Test

Strict thermal cycling confirms stable operational functionality within the standard commercial temperature range.

Product Shipping for LINK-PP LS-BL55491G-A6C 1G SFP

Our robust global supply chain guarantees safe, efficient, and damage-free delivery of your networking equipment straight from the manufacturing facility to your exact location.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Each transceiver is carefully sealed inside premium electrostatic discharge protective bags.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Specialized customized foam inserts provide superior impact resistance during transit operations.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Streamlined warehouse management ensures rapid inventory allocation and immediate shipment dispatch.

Global Logistics and International Delivery

Global Logistics and International Delivery

Trusted international courier partnerships enable reliable and punctual worldwide shipping solutions.

LINK-PP LS-BL55491G-A6C 1G SFP Usage Demonstration

Deploying this hot-pluggable module is incredibly simple. Users can quickly insert the transceiver into any MSA-compatible switch port, connect the simplex LC single-mode fiber, and instantly establish a stable 1.25Gbps bidirectional optical connection without powering down equipment.

LS-BL55491G-A6C 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

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable LS-BL55491G-A6C modules based on network architecture and application requirements.

Compatibility Verification Support

Compatibility Verification Support

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

Deployment & Installation Assistance

Deployment & Installation Assistance

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

Long-Term Technical Assurance

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-A6C 1G SFP After-Sales Assurance

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

15 days

15-day no-reason return and refund

Free maintenance or replacement

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

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

Model Comparison Table

LS-BL55491G-A6C
Current Model
LS-BL55491G-A6C
LS-BL55491G-A5C
LS-BL55491G-A5C
LS-BL55491G-A0C
LS-BL55491G-A0C
LS-BL55491G-A2C
LS-BL55491G-A2C
LS-BL55491G-10C
LS-BL55491G-10C
LS-BL55491G-80C
LS-BL55491G-80C
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)
160km
150km
100km
120km
10km
80km
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
-28 to -1dBm
-28 to -1dBm
-28 to -1dBm
-28 to -1dBm
-26 to -1dBm
-26 to -1dBm
Operating Temperature
0 to 70°C
0 to 70°C
0 to 70°C
0 to 70°C
0 to 70°C
0 to 70°C
Form Factor
SFP
SFP
SFP
SFP
SFP
SFP
Transmitter Type
DFB
DFB
DFB
DFB
DFB
DFB
Receiver Type
APD
APD
PIN
APD
PIN
PIN
DOM Support
Yes
Yes
Yes
Yes
Yes
Yes
Protocols
SFP MSA、SFF-8472
SFP MSA、SFF-8472
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
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LINK-PP

  1. 1G SFP BiDi
  2. 1G SFP Transceiver

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Download
Product Drawing LS-BL55491G-A6C.pdf Download

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J***n
Czech Republic
Verified Purchase
4 .0
2026-06-27
Fedex box was slightly dented upon arrival, but the 1G BiDi SFP works flawlessly.
8 Helpful vote Comments
J***z
Switzerland
Verified Purchase
5 .0
2026-05-31
MSA compliant and plug-and-play. TX power at 1550nm is perfectly within spec. ✅
104 Helpful vote Comments
S***k
Finland
Verified Purchase
5 .0
2026-05-22
This 1G BiDi transceiver handled our 140km fiber run with zero packet loss.
159 Helpful vote Comments
K***z
Austria
Verified Purchase
5 .0
2026-04-13
Needed a reliable 1G BiDi SFP for a long-distance interconnect. This exceeded expectations.
135 Helpful vote Comments
D***s
Viet Nam
Verified Purchase
5 .0
2026-04-08
Top notch Simplex LC DOM module.
120 Helpful vote Comments
J***s
Japan
Verified Purchase
5 .0
2026-03-20
Used the LS-BL55491G-A6C to bridge two campus sites. The 1550nm/1490nm pairing works brilliantly over a single strand of fiber. Tested with Extreme switches, zero vendor lock-in issues.
124 Helpful vote Comments
E***n
Japan
Verified Purchase
5 .0
2026-03-17
Best cost-effective BiDi SFP module out there.
217 Helpful vote Comments
A***e
Netherlands
Verified Purchase
5 .0
2026-01-26
Instant link on our Dell switches! ⚡
177 Helpful vote Comments
P***s
Sweden
Verified Purchase
5 .0
2026-01-07
Replaced my old optics with these 160km SMF transceivers. Ping times are incredibly stable.
36 Helpful vote Comments
L***n
Austria
Verified Purchase
5 .0
2026-01-04
Easily configured on generic switches. Reliable 1G BiDi connectivity for our NAS setup.
169 Helpful vote Comments
D***z
Ecuador
Verified Purchase
5 .0
2025-12-19
Awesome 160km SMF transceiver module. Works flawlessly in our indoor aggregation racks.
76 Helpful vote Comments
N***a
Bangladesh
Verified Purchase
5 .0
2025-11-01
Spent almost three days looking for the items. Now I've got it! they are in new condition at a good price.
31 Helpful vote Comments
S***g
Venezuela
Verified Purchase
5 .0
2025-10-04
Easy install, instant 1.25Gbps link!
116 Helpful vote Comments
A***r
Kazakhstan
Verified Purchase
5 .0
2025-09-16
Upgraded our inter-city data center link using this 160km simplex LC module. Transmit and receive levels are super stable via SFF-8472 diagnostics. Incredible value compared to OEM optics.
66 Helpful vote Comments
R***n
Canada
Verified Purchase
5 .0
2025-09-03
You have guys are great.
96 Helpful vote Comments
W***m
Netherlands
Verified Purchase
5 .0
2025-08-19
Excellent, easy to use website with a search function that actually works!
47 Helpful vote Comments
S***r
Sweden
Verified Purchase
5 .0
2025-07-29
Great 1G BiDi SFP for enterprise access. DOM feature is super handy for monitoring.
81 Helpful vote Comments
M***s
Ecuador
Verified Purchase
5 .0
2025-07-18
Solid 1.25Gbps throughput over SMF.
133 Helpful vote Comments
M***a
United Kingdom
Verified Purchase
5 .0
2025-07-16
We deployed these for a critical telecom backhaul. Sensitivity at <-32dBm is incredible. Interoperates seamlessly with Juniper and HPE Aruba switches. The 0-70°C temp range is perfect indoors.
166 Helpful vote Comments
C***t
Dominican Republic
Verified Purchase
5 .0
2025-07-05
Pushed this LS-BL55491G-A6C to the limit on a 150km long-haul link. The DFB laser and DOM reporting are spot on. Seamless Cisco compatibility right out of the box!
219 Helpful vote Comments
S***t
Denmark
Verified Purchase
5 .0
2025-05-22
The price was good and the shipping time was perfect and the product is very good so all and all we are happy. Thank you.
80 Helpful vote Comments
B***s
Canada
Verified Purchase
5 .0
2025-05-15
Flawless 1550nm-TX/1490nm-RX performance, highly recommended.
103 Helpful vote Comments
K***a
Lebanon
Verified Purchase
5 .0
2025-04-29
Exactly what I ordered. Quality products. Arrived a day earlier than promised.
143 Helpful vote Comments
E***p
United States
Verified Purchase
5 .0
2025-03-21
The title says it all. The pricing was excellent compared to Pulse-genuine pricing on 10/25/40G Transceiver Modules. Delivery was Fast ! Very satisfied customer.
96 Helpful vote Comments
B***t
Japan
Verified Purchase
5 .0
2025-03-18
Good TX/RX power, fast install!
167 Helpful vote Comments
R***l
Russian Federation
Verified Purchase
5 .0
2025-03-16
Works perfectly on our campus fiber network!
121 Helpful vote Comments
M***n
Spain
Verified Purchase
5 .0
2025-03-05
Exactly as listed, Fast delivery.
23 Helpful vote Comments
S***n
Taiwan, Province of China
Verified Purchase
5 .0
2024-10-21
Excellent service delivery on time and very Fast and accurate.
54 Helpful vote Comments
h***o
United Kingdom
Verified Purchase
5 .0
2024-10-06
Looks good so far. Good product, fair price. Shipping was Fast enough (for what I paid for it).
84 Helpful vote Comments
C***a
Poland
Verified Purchase
5 .0
2024-07-16
Great service - exactly what I needed and very timely delivery.
49 Helpful vote Comments
E***s
Belarus
Verified Purchase
5 .0
2024-07-02
I received the item sooner than expected and it was exactly what it was supposed to be and was in the condition that it was supposed to be.
80 Helpful vote Comments
M***m
Spain
Verified Purchase
5 .0
2024-06-30
Fantastic, all my networking gears needs are from Link-PP!
31 Helpful vote Comments
J***s
United States
Verified Purchase
5 .0
2024-04-11
Good prices, need better selection.
65 Helpful vote Comments
R***n
Singapore
Verified Purchase
5 .0
2024-01-14
This 10/25/40G Transceiver Modules magnetics works as expected.
56 Helpful vote Comments
S***o
Italy
Verified Purchase
5 .0
2023-11-25
The shipping was Fast and packaging was good enough to protect the item.
51 Helpful vote Comments
B***y
United States
Verified Purchase
5 .0
2023-11-14
Satisfied, and product/shipment were as expected...thanks.
159 Helpful vote Comments
J***a
United States
Verified Purchase
5 .0
2023-10-20
They seem to have a wide compatible options, this one is highly compatible with my Juniper switch. Will try their Tyco next time.
82 Helpful vote Comments
S***a
Israel
Verified Purchase
5 .0
2023-10-17
I bought these 10/25/40G Transceiver Modules together with the recommended Lan Transformer. They help me select the right Polarity and show me their setup, and I received them very soon, much Faster than ever shopping. Nothing wrong with these items, they are built well and function well. Appreciate their efforts.
62 Helpful vote Comments
F***l
Canada
Verified Purchase
5 .0
2023-08-14
Very good online store to do business with. Competitive pricing. Great advice personally when needed. Fast processing and shipping. Still come back.
70 Helpful vote Comments
S***g
Italy
Verified Purchase
5 .0
2023-06-20
Lowest price I could find, received the products very quickly.
54 Helpful vote Comments
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LS-BL55491G-A6C 1g bidi sfp 1550nm-tx 1490nm-rx 160km simplex lc dom smf transceiver module

LINK-PP LS-BL55491G-A6C 1G BiDi SFP 1550nm-TX/1490nm-RX 160km Simplex LC DOM SMF Transceiver Module

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