Does this adapter use standard single-mode fiber? We have Simplex LC runs ready for our 20km backhaul.

Yes, it is explicitly designed for Single Mode Fiber (SMF) using a Simplex LC connector. Utilizing WDM technology (1550nm-TX/1310nm-RX), it easily achieves up to 20km transmission on a single strand.

How does the optical performance compare to original OEM brands? Need high reliability but on a budget.

It delivers the exact same stability and performance as OEM transceivers, featuring premium 1550nm DFB lasers and strict DOM accuracy. It gives you true enterprise-grade networking at a fraction of the cost.

Hi, will this 2.5G BiDi SFP work with my Cisco and Juniper switches? We need seamless interoperability.

Yes! The LS-BL55312G-20I is fully MSA compliant. It undergoes rigorous multi-brand compatibility testing to ensure plug-and-play interoperability with Cisco, Juniper, Arista, and other major switches.

I'm planning a large campus fiber upgrade. Do you offer B2B bulk pricing if we grab over 500 units?

Absolutely. We offer strong tiered discounts for enterprise bulk procurement. For 500+ units, you'll get a highly competitive wholesale price—just reach out to our sales team or check our site's promo codes.

Breadcrumb: Home; Products; Optic Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 2.5G SFP; 184528

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LINK-PP LS-BL55312G-20I 2.5G SFP BiDi 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL55312G-20I 2.5G SFP BiDi 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 184528
Price: 7.912 USD
Availability: InStock
Rating: 5 (21 reviews)

Product: LINK-PP LS-BL55312G-20I 2.5G SFP BiDi 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
SKU: 184528
P/N: LS-BL55312G-20I
Price: $ 9.2
Stock: 890 in Stock
Sold: 810
Product URL: https://www.l-p.com/products/481492.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

21 Reviews

4 Questions

810 Sold

$ 9.2

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

Qty (pcs) :

Unit Price :

$ 9.2

100

$ 8.74

1000

$ 8.464

3000

$ 8.188

6000

$ 7.912

Manufacture: LINK-PP P/N: LS-BL55312G-20I SKU: 184528

Compatible:: LINK-PP

Compatible P/N:: LS-BL31492G-10C | 10km; LS-BL49312G-10C | 10km; LS-BL31492G-20C | 20km; LS-BL31492G-20I | 20km; LS-BL31552G-20C | 20km; LS-BL31552G-20I | 20km; LS-BL49312G-20C | 20km; LS-BL49312G-20I | 20km; LS-BL55312G-20C | 20km; LS-BL55312G-20I | 20km; LS-BL31552G-40C | 40km; LS-BL31552G-40I | 40km; LS-BL55312G-40C | 40km; LS-BL55312G-40I | 40km

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Estimated delivery time : 3 - 10 days.

5-Year Warranty 30-Day Returns 30-Day Exchange

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LINK-PP LS-BL55312G-20I 2.5G BiDi SFP Specifications

The LINK-PP LS-BL55312G-20I is a high-performance 2.5Gbps transceiver designed for robust optical networks. Operating over single-mode fiber, this industrial-grade optical module ensures stable data transmission across extreme temperatures from -40°C to +85°C. Engineered with a durable simplex LC connector, it delivers cost-effective and reliable connectivity for modern communication infrastructure.

LINK-PP Part Number	LS-BL55312G-20I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	2.5Gbps
Wavelength	1550nm-TX / 1310nm-RX	Max Cable Distance	20km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
Receiver Sensitivity	-18dBm	DDM/DOM	Supported
TX Power	-5 to 0dBm	RX Power	-23 to -1dBm
Operating Temperature Range	-40 to 85°C	Protocols	MSA Compliant

Key Features of LINK-PP LS-BL55312G-20I 2.5G BiDi SFP

Discover the exceptional capabilities of this hot-pluggable bidirectional transceiver. Fully SFP MSA compliant, it seamlessly supports SDH STM-16 and 2x Fiber Channel applications. With a low power consumption of under 300mA and Class I laser safety, it optimizes your optical network performance.

LINK-PP LS-BL55312G-20I 2.5G BiDi SFP Optical Module

As a premier bidirectional optical module, this versatile component utilizes advanced WDM technology to maximize bandwidth. Its compact plug-and-play form factor significantly simplifies network upgrades while ensuring flawless interoperability across diverse telecommunication environments.

LS-BL55312G-20I: 2.5G Connectivity for Internet Service Provider

Designed specifically to meet ISP networking demands, this module provides seamless broadband expansion capabilities. It serves as an ideal solution for core router interfaces, allowing internet service providers to deploy high-speed connections with exceptional stability.

LS-BL55312G-20I Module with 1550nm-TX and 1310nm-RX Wavelength

Utilizing advanced single-fiber communication, this WDM transceiver features a precise 1550nm DFB laser transmitter and a highly sensitive 1310nm PIN photodetector receiver. This strategic wavelength pairing eliminates signal crosstalk and maximizes transmission efficiency.

LS-BL55312G-20I Module Supporting 20km Transmission

Engineered for long-reach fiber applications, the device guarantees pristine signal integrity over distances up to 20km via single-mode fiber. Its robust optical budget prevents data loss, making it perfect for sprawling campus or metropolitan network deployments.

LS-BL55312G-20I Module with Simplex LC Interface

Equipped with a standard simplex LC receptacle, this module cuts cabling costs by enabling full duplex communication over a single fiber network strand. The secure LC interface ensures easy integration into standard patch panel infrastructure.

LS-BL55312G-20I Module with DOM for Real-Time Monitoring

Featuring built-in digital diagnostic monitoring according to the SFF-8472 standard, the transceiver enables precise optical network management. Administrators can continuously track temperature, voltage, and laser power levels, preventing unexpected downtime through proactive maintenance.

LINK-PP LS-BL55312G-20I 2.5G SFP Certification

LINK-PP guarantees exceptional product safety and strict industry compliance. This industrial-grade transceiver meets the highest global regulatory standards, ensuring seamless operation in demanding telecommunication ecosystems.

LS-BL55312G-20I Quality Testing Program

Every manufactured module undergoes a comprehensive quality assurance protocol. Our factory-tested procedures eliminate defective units, verifying structural integrity and stable optical performance before reaching the customer.

LS-BL55312G-20I Quality Certifications

This robust communication device is fully certified by major international bodies. Being CE, FCC, UKCA, UL, and RoHS compliant ensures environmentally friendly and legally secure network deployments.

LS-BL55312G-20I Certified for Reliable Host-Device Compatibility

Extensively evaluated for broad multi-vendor interoperability, the transceiver guarantees flawless integration. It effortlessly connects with leading OEM switches and enterprise routers without encountering firmware locking issues.

Rigorous Testing Ensures Reliable SFP Performance

Our strictly controlled diagnostic evaluation process validates the durability of all network hardware, ensuring unmatched reliability and long-term transmission stability in real-world scenarios.

Rigorous Testing Ensures Reliable Transceiver Performance

Optical Spectrum Test

Precise evaluation of the center wavelength guarantees strict adherence to required SMF optical specifications.

Eye Pattern Test

Extensive eye diagram analysis verifies exceptional signal integrity and low jitter for high-speed transmission.

Bit Error Rate Test

Continuous data packet monitoring confirms zero packet loss, maximizing your overall data link reliability.

Temperature Test

Extreme thermal stress testing verifies stable component operation within the -40°C to +85°C range.

Product Shipping for LINK-PP LS-BL55312G-20I 2.5G SFP

We maintain a highly efficient order fulfillment process, prioritizing safe and secure delivery to ensure your networking equipment arrives in perfect working condition.

Anti-Static Protective Packaging

Premium ESD shielding prevents electrical damage during the entire shipping process.

Shock-Resistant Transport Protection

Thick impact buffering materials shield internal components from harsh physical vibrations.

Fast Order Processing and Dispatch

Streamlined warehouse operations enable rapid fulfillment and immediate tracking number generation.

Global Logistics and International Delivery

Reliable worldwide shipping partners ensure prompt and seamless cross-border customs clearance.

LINK-PP LS-BL55312G-20I 2.5G SFP Usage Demonstration

Experiencing this module is simple due to its intuitive plug-and-play installation. Users just align the device with the host slot, perform a gentle optical module insertion, and connect the single-mode fiber patch cord to establish the link instantly.

LS-BL55312G-20I 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-BL55312G-20I 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-BL55312G-20I 2.5G 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-BL55312G-20I	LS-BL55312G-40I	LS-BL49312G-10C	LS-BL55492G-80I	LS-BL55492G-A2C	LS-BL49312G-20I

Compatible	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP
Data Rate (Max)	2.5Gbps	2.5Gbps	2.5Gbps	2.5Gbps	2.5Gbps	2.5Gbps
Wavelength	1550nm-TX / 1310nm-RX	1550nm-TX / 1310nm-RX	1490nm-TX/1310nm-RX	1550nm-TX/1490nm-RX	1550nm-TX/1490nm-RX	1490nm-TX/1310nm-RX
Connector	Simplex LC	Simplex LC	Simplex LC	Simplex LC	Simplex LC	Simplex LC
Cable Distance (Max)	20km	40km	10km	80km	120km	20km
Cable Type	SMF	SMF	SMF	SMF	SMF	SMF
TX Power	-5 to 0dBm	-2 to +4dBm	-5 to 0dBm	-2 to +4dBm	-2 to +4dBm	-5 to 0dBm
Receiver Sensitivity	-23 to -1dBm	-23 to -1dBm	-23 to -1dBm	-26dBm	-27dBm	-23 to -1dBm
Operating Temperature	-40 to 85°C	-40 to 85°C	0 to 70°C	-40 to 85°C	0 to 70°C	-40 to 85°C
Form Factor	SFP	SFP	SFP	SFP	SFP	SFP
Transmitter Type	DFB	DFB	DFB	DFB	DFB	DFB BiDi
Receiver Type	PIN	PIN	PIN	PIN	APD	PIN+TIA
DDM/DOM	Supported	Supported	Yes	Yes	Supported
Protocols	MSA Compliant	MSA Compliant	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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Questions & Answers
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Q: Does this adapter use standard single-mode fiber? We have Simplex LC runs ready for our 20km backhaul. By M***s on 2026-07-07

A: Yes, it is explicitly designed for Single Mode Fiber (SMF) using a Simplex LC connector. Utilizing WDM technology (1550nm-TX/1310nm-RX), it easily achieves up to 20km transmission on a single strand. By admin on 2026-07-07
Q: How does the optical performance compare to original OEM brands? Need high reliability but on a budget. By J***s on 2026-04-01

A: It delivers the exact same stability and performance as OEM transceivers, featuring premium 1550nm DFB lasers and strict DOM accuracy. It gives you true enterprise-grade networking at a fraction of the cost. By admin on 2026-04-01
Q: Hi, will this 2.5G BiDi SFP work with my Cisco and Juniper switches? We need seamless interoperability. By D***s on 2025-11-09

A: Yes! The LS-BL55312G-20I is fully MSA compliant. It undergoes rigorous multi-brand compatibility testing to ensure plug-and-play interoperability with Cisco, Juniper, Arista, and other major switches. By admin on 2025-11-09
Q: I'm planning a large campus fiber upgrade. Do you offer B2B bulk pricing if we grab over 500 units? By D***s on 2025-10-18

A: Absolutely. We offer strong tiered discounts for enterprise bulk procurement. For 500+ units, you'll get a highly competitive wholesale price—just reach out to our sales team or check our site's promo codes. By admin on 2025-10-18

Customer Reviews
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C***e

Sweden

Verified Purchase

5 .0

2026-07-23

Solid 2.5G SFP BiDi transceiver for outdoor enclosures. Temp range is what we need. ❄️

68 Helpful vote Comments

C***l

Peru

Verified Purchase

4 .0

2026-07-14

Delivery delayed one day, but the 2.5G industrial SFP works flawlessly.

8 Helpful vote Comments

S***l

Ecuador

Verified Purchase

5 .0

2026-06-23

Excellent 1550nm-TX performance on SMF. Affordable alternative for bulk B2B enterprise networking procurement.

107 Helpful vote Comments

D***n

Japan

Verified Purchase

5 .0

2026-06-19

MSA compatible and easily recognized. Great job!

117 Helpful vote Comments

J***k

Sweden

Verified Purchase

5 .0

2026-06-03

Perfect for our campus fiber network upgrade. Tested this 2.5G SFP BiDi transceiver with Cisco and Juniper switches—MSA compatibility is spot on. 20km transmission distance handles our core router links easily.

77 Helpful vote Comments

D***n

United States

Verified Purchase

5 .0

2026-05-24

Reliable Simplex LC connection. Ideal for our telecom backhaul projects in harsh weather. ⛈️

79 Helpful vote Comments

C***s

Germany

Verified Purchase

5 .0

2026-05-14

Simplex LC interface saves us extra cable.

59 Helpful vote Comments

B***n

Italy

Verified Purchase

5 .0

2026-03-31

Stable 20km transmission on single-mode fiber links.

147 Helpful vote Comments

B***r

Switzerland

Verified Purchase

5 .0

2026-03-08

Flawless 2.5G BiDi module for fiber networking.

149 Helpful vote Comments

A***s

Argentina

Verified Purchase

5 .0

2026-02-22

Works perfectly in our extreme temp environments.

130 Helpful vote Comments

C***z

Costa Rica

Verified Purchase

5 .0

2026-01-22

Deployed these industrial 2.5G BiDi modules in our outdoor cabinets across Nevada. The -40 to 85C rating is legit. DDM monitoring shows stable 1550nm-TX power even in extreme desert heat.

93 Helpful vote Comments

J***l

Chile

Verified Purchase

5 .0

2026-01-09

Awesome 1550nm-TX/1310nm-RX pair for ISP backhaul.

178 Helpful vote Comments

S***s

United States

Verified Purchase

5 .0

2025-12-30

Using these for cell tower backhaul links. The simplex LC interface saves fiber strands, and the 1310nm-RX sensitivity is excellent. DOM tracks voltage perfectly. Outstanding value for enterprise B2B batch deployment.

146 Helpful vote Comments

S***z

Canada

Verified Purchase

5 .0

2025-12-28

Great MSA compliant module. Paired 1550nm-TX/1310nm-RX units for our factory floor switches.

156 Helpful vote Comments

L***n

Finland

Verified Purchase

5 .0

2025-12-10

Plug and play industrial 2.5G optical transceiver.

168 Helpful vote Comments

M***n

Brazil

Verified Purchase

5 .0

2025-11-15

Bought for a 2.5G home NAS setup and small data center interconnection. The single-mode fiber connection is flawless. Zero dropped packets after weeks of stress testing this industrial SFP module.

199 Helpful vote Comments

S***z

United States

Verified Purchase

5 .0

2025-11-01

Digital diagnostic monitoring on this 20km optical transceiver is highly accurate. Great buy!

196 Helpful vote Comments

J***r

Japan

Verified Purchase

5 .0

2025-10-29

No issues with multi-brand switch compatibility tests. Works like a charm over 20km.

74 Helpful vote Comments

A***n

Colombia

Verified Purchase

5 .0

2025-09-16

Accurate DOM readings on all 50 units.

191 Helpful vote Comments

P***n

Brazil

Verified Purchase

5 .0

2025-09-15

Massively upgraded our server room with these industrial 2.5G SFPs. Easy plug and play. ⚡

135 Helpful vote Comments

S***r

United States

Verified Purchase

5 .0

2025-09-03

Top-tier industrial SFP for outdoor network cabinets.

148 Helpful vote Comments

Verified Purchase

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$ 10.2 ~~$ 0.00~~

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LINK-PP

LS-BL31492G-10C | 10km

LINK-PP LS-BL31492G-10C 2.5G SFP BiDi 1310nm-TX/1490nm-RX 10km DOM Simplex LC SMF Optical Transceiver Module

25 Reviews
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680 Sold

$ 9 ~~$ 0.00~~

{"pid":495486,"minimum_ordered_quantity":1,"skulist":[{"pskuid":215438,"cid":752,"pid":495486,"sku":"215438","psvid1":310544,"psvid2":310545,"psvid3":0,"psvid4":0,"left_num":320,"price":"9.000","strike_price":"0.000","innercode":"","addtime":"2026-07-12 23:17:15","uptime":"2026-07-12 23:17:15","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":"9","subtotal":9}]}
LINK-PP

LS-BL31552G-20C | 20km

LINK-PP LS-BL31552G-20C 2.5G SFP BiDi 1310nm-TX/1550nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module

49 Reviews
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392 Sold

$ 8.8 ~~$ 0.00~~

{"pid":485567,"minimum_ordered_quantity":1,"skulist":[{"pskuid":193620,"cid":752,"pid":485567,"sku":"193620","psvid1":277275,"psvid2":277276,"psvid3":0,"psvid4":0,"left_num":509,"price":"8.800","strike_price":"0.000","innercode":"","addtime":"2025-02-12 04:57:26","uptime":"2026-04-14 00:24:34","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":"8.8","subtotal":8.8}]}
LINK-PP

LS-BL31552G-20I | 20km

LINK-PP LS-BL31552G-20I 2.5G SFP BiDi 1310nm-TX/1550nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

55 Reviews
|
280 Sold

$ 8.8 ~~$ 0.00~~

{"pid":485569,"minimum_ordered_quantity":1,"skulist":[{"pskuid":193622,"cid":752,"pid":485569,"sku":"193622","psvid1":277280,"psvid2":277281,"psvid3":0,"psvid4":0,"left_num":319,"price":"8.800","strike_price":"0.000","innercode":"","addtime":"2025-02-12 09:03:59","uptime":"2025-02-12 22:03:59","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":"8.8","subtotal":8.8}]}
LINK-PP

LS-BL55312G-20C | 20km

LINK-PP LS-BL55312G-20C 2.5G SFP BiDi 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module

24 Reviews
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1.8K Sold

$ 8.2 ~~$ 0.00~~

{"pid":481491,"minimum_ordered_quantity":1,"skulist":[{"pskuid":184527,"cid":752,"pid":481491,"sku":"184527","psvid1":271704,"psvid2":271705,"psvid3":0,"psvid4":0,"left_num":609,"price":"8.200","strike_price":"0.000","innercode":"","addtime":"2024-10-14 13:13:28","uptime":"2024-11-08 00:44:50","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":"8.2","subtotal":8.2}]}
FS

SFP-2.5G-T | 100m

FS SFP-2.5G-T Compatible LINK-PP 2.5GBASE-T SFP Copper 100m RJ-45 Transceiver Module

35 Reviews
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3.1K Sold

$ 24.25 ~~$ 0.00~~

{"pid":497634,"minimum_ordered_quantity":1,"skulist":[{"pskuid":225078,"cid":752,"pid":497634,"sku":"225078","psvid1":329753,"psvid2":329754,"psvid3":0,"psvid4":0,"left_num":1181,"price":"24.250","strike_price":"0.000","innercode":"","addtime":"2026-08-26 23:42:09","uptime":"2026-08-26 23:42:09","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":"24.25","subtotal":24.25}]}

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LINK-PP LS-BL55312G-20I 2.5G SFP BiDi 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

Product summary

Product Details

LINK-PP LS-BL55312G-20I 2.5G BiDi SFP Specifications

Key Features of LINK-PP LS-BL55312G-20I 2.5G BiDi SFP

LINK-PP LS-BL55312G-20I 2.5G BiDi SFP Optical Module

LS-BL55312G-20I: 2.5G Connectivity for Internet Service Provider

LS-BL55312G-20I Module with 1550nm-TX and 1310nm-RX Wavelength

LS-BL55312G-20I Module Supporting 20km Transmission

LS-BL55312G-20I Module with Simplex LC Interface

LS-BL55312G-20I Module with DOM for Real-Time Monitoring

LINK-PP LS-BL55312G-20I 2.5G SFP Certification

LS-BL55312G-20I Quality Testing Program

LS-BL55312G-20I Quality Certifications

LS-BL55312G-20I Certified for Reliable Host-Device Compatibility

Rigorous Testing Ensures Reliable SFP Performance

Optical Spectrum Test

Eye Pattern Test

Bit Error Rate Test

Temperature Test

Product Shipping for LINK-PP LS-BL55312G-20I 2.5G SFP

Anti-Static Protective Packaging

Shock-Resistant Transport Protection

Fast Order Processing and Dispatch

Global Logistics and International Delivery

LINK-PP LS-BL55312G-20I 2.5G SFP Usage Demonstration

LS-BL55312G-20I Technical Support

Pre-Sales Technical Consultation

Compatibility Verification Support

Deployment & Installation Assistance

Long-Term Technical Assurance

LINK-PP LS-BL55312G-20I 2.5G SFP After-Sales Assurance

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LINK-PP LS-BL55312G-20I 2.5G SFP BiDi 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

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