Are these LINK-PP LS-BL49551G-80I industrial transceivers fully rated for extreme outdoor temperatures (-40°C to +85°C), or are they just standard commercial units with a fancy label?

These are true industrial-grade (I-Temp) transceivers designed with hardened laser diodes, IC components, and PCB layouts specifically built to operate reliably in harsh environments ranging from -40°C to +85°C, making them ideal for outdoor cabinets and remote base stations.

What is the exact optical power budget and typical receiving sensitivity for this 80km 1G BiDi module? We need to verify our link loss margin.

The transmitter optical power (TX) ranges from 0dBm to +5dBm, and the receiver sensitivity (RX) is -26dBm to -1dBm, which comfortably supports stable transmission up to 80km over standard Single-Mode Fiber (SMF).

Does this industrial SFP module support real-time Digital Diagnostic Monitoring (DOM/DDM) so our NOC team can track core temperature and optical levels?

Absolutely. The LS-BL49551G-80I features built-in DDM/DOM functionality compliant with SFF-8472 standards. You can monitor real-time parameters such as internal transceiver temperature, laser bias current, TX power, and RX power directly through your switch command-line interface.

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LINK-PP LS-BL49551G-80I 1G BiDi SFP 1490nm-TX/1550nm-RX 80km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL49551G-80I 1G BiDi SFP 1490nm-TX/1550nm-RX 80km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 183234
Price: 17.974 USD
Availability: InStock
Rating: 4.9 (37 reviews)

# 183234

Product: LINK-PP LS-BL49551G-80I 1G BiDi SFP 1490nm-TX/1550nm-RX 80km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
SKU: 183234
P/N: LS-BL49551G-80I
Price: $ 20.9
Stock: 1100 in Stock
Sold: 920
Product URL: https://www.l-p.com/products/478219.htm

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Manufacture: LINK-PP

P/N: LS-BL49551G-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-BL49551G-80I 1G BiDi SFP Specifications

The LINK-PP LS-BL49551G-80I 1G BiDi transceiver provides 1.25 Gbps connectivity via single-mode fiber with a reach of up to 80 km. It operates at a wavelength pair of 1490nm-TX/1550nm-RX. Built to industrial standards, the transceiver delivers reliable performance for robust long-haul transmission under demanding environmental conditions.

LINK-PP Part Number	LS-BL49551G-80I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1490nm-TX/1550nm-RX	Max Cable Distance	80km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB BiDi	Receiver Type	PIN
TX Power	0 to +5dBm	RX Power	-26 to -1dBm
Receiver Sensitivity	<-26dBm	Receiver Overload	-1dBm
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Are these LINK-PP LS-BL49551G-80I industrial transceivers fully rated for extreme outdoor temperatures (-40°C to +85°C), or are they just standard commercial units with a fancy label? By S***z on 2025-03-11

A: These are true industrial-grade (I-Temp) transceivers designed with hardened laser diodes, IC components, and PCB layouts specifically built to operate reliably in harsh environments ranging from -40°C to +85°C, making them ideal for outdoor cabinets and remote base stations. By admin on 2025-03-11
Q: What is the exact optical power budget and typical receiving sensitivity for this 80km 1G BiDi module? We need to verify our link loss margin. By L***k on 2024-02-25

A: The transmitter optical power (TX) ranges from 0dBm to +5dBm, and the receiver sensitivity (RX) is -26dBm to -1dBm, which comfortably supports stable transmission up to 80km over standard Single-Mode Fiber (SMF). By admin on 2024-02-25
Q: Does this industrial SFP module support real-time Digital Diagnostic Monitoring (DOM/DDM) so our NOC team can track core temperature and optical levels? By G***s on 2024-02-03

A: Absolutely. The LS-BL49551G-80I features built-in DDM/DOM functionality compliant with SFF-8472 standards. You can monitor real-time parameters such as internal transceiver temperature, laser bias current, TX power, and RX power directly through your switch command-line interface. By admin on 2024-02-03

Customer Reviews
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J***s

United States

Verified Purchase

5 .0

2026-04-01

Very stable link.:D

17 Helpful vote Comments

J***k

Germany

Verified Purchase

4 .0

2025-11-21

Solid 1G SFP. Works great with our Huawei OLT uplink, though the outer shipping carton arrived slightly dented. Module inside was 100% fine and passed optical loopback test.

28 Helpful vote Comments

L***t

Brunei Darussalam

Verified Purchase

5 .0

2025-11-09

Works out of the box!:)

17 Helpful vote Comments

J***y

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-10-27

Flawless on Mikrotik.:D

44 Helpful vote Comments

L***g

Japan

Verified Purchase

5 .0

2025-08-07

Awesome module!

82 Helpful vote Comments

A***s

Taiwan, Province of China

Verified Purchase

5 .0

2025-06-24

We tested 20 pairs of these LINK-PP LS-BL49551G-80I modules for a remote substation backhaul. Every single one linked up instantly. The 1490nm/1550nm WDM design saved our fiber count!

48 Helpful vote Comments

E***k

United Kingdom

Verified Purchase

5 .0

2025-04-17

Incredible distance, zero attenuation errors over 81km of fiber. The Simplex LC connector fits snug and secure. Great engineering!:)

19 Helpful vote Comments

N***z

Finland

Verified Purchase

5 .0

2025-03-30

Running a point-to-point connection over 79km of single-mode fiber with these wide-temp modules. Signal stability is incredible, no CRC errors after a month of heavy stress testing.

18 Helpful vote Comments

T***g

Netherlands

Verified Purchase

5 .0

2025-03-10

Swapped out our old failing commercial SFPs with these industrial LINK-PP units. Linked up right away on our Ubiquiti switch. Voltage and bias current look clean in DDM monitoring.

73 Helpful vote Comments

C***s

Indonesia

Verified Purchase

5 .0

2025-01-31

Needed a reliable wide-temperature optical transceiver for our remote tower site. This industrial SMF module handles harsh weather environments and keeps our backhaul rock solid.

78 Helpful vote Comments

A***y

Italy

Verified Purchase

5 .0

2025-01-23

Deployed these industrial 1G SFP modules in our outdoor cabinet. Temperature is swinging from -40C to +75C without a single drop. DDM readings via SNMP are accurate. Highly recommended for rugged WISP sites!:D

24 Helpful vote Comments

M***t

Israel

Verified Purchase

5 .0

2024-11-26

Fantastic value for 80km 1G industrial BiDi optics. Recognized instantly with custom EEPROM coding matching our request. Will buy again!

13 Helpful vote Comments

S***s

South Africa

Verified Purchase

5 .0

2024-11-22

Top notch quality.

43 Helpful vote Comments

A***s

Poland

Verified Purchase

5 .0

2024-11-04

Solid 1G BiDi optics. Running 80km between remote utility poles over single-mode fiber. Link margin is exceptional.

4 Helpful vote Comments

L***e

Hong Kong

Verified Purchase

4 .0

2024-10-22

Good performance across 75km. DOM interface reports optical power levels correctly (-3dBm TX, -31dBm RX). Delivery took 4 days longer than expected, but the module build quality is top tier.

11 Helpful vote Comments

T***l

Norway

Verified Purchase

5 .0

2024-09-22

Essential for long-distance industrial networking. Clean laser output, low insertion loss, and zero compatibility issues across multi-vendor switches. Best price-to-performance ratio for 80km industrial links!

61 Helpful vote Comments

M***y

Bangladesh

Verified Purchase

5 .0

2024-07-30

LINK-PP is the best supplier in China. The high quality, the perfect after sales services, the Fast delivery, the professional sales and so on. Now, the SI-80007-F has been worked on my switch without any problems. Moreover, the price is more favorable than other suppliers.

39 Helpful vote Comments

D***r

Philippines

Verified Purchase

5 .0

2024-07-22

These work very well, are easy to install.

22 Helpful vote Comments

E***s

Sweden

Verified Purchase

5 .0

2024-07-18

Plug and play.

34 Helpful vote Comments

Z***s

Malaysia

Verified Purchase

5 .0

2024-07-07

Exceeded expectations!

55 Helpful vote Comments

P***o

Russian Federation

Verified Purchase

5 .0

2024-06-03

I was doubtful before purchasingt this product because of its compatiblity issue, but in the end, it is compatible with my devices. I will come again!

55 Helpful vote Comments

A***z

Belarus

Verified Purchase

4 .0

2024-03-28

Great industrial transceiver. Only minor complaint is that the anti-static bag was taped a bit too tight, but the SFP itself was pristine and booted right up in our Cisco industrial switch.

31 Helpful vote Comments

K***o

Malaysia

Verified Purchase

5 .0

2024-03-22

Received my purchase in a timely manner exactly as ordered. Would definitely buy from link-pp in the future.

63 Helpful vote Comments

D***n

Macao

Verified Purchase

5 .0

2024-03-16

Good product for its price, Fast delivery and quick response from the seller.

21 Helpful vote Comments

S***l

Cambodia

Verified Purchase

5 .0

2024-03-12

Fast shipping.

35 Helpful vote Comments

E***i

Indonesia

Verified Purchase

5 .0

2024-01-24

Third order from LINK-PP. Excellent notifications, on time delivery and exactly what I needed.

22 Helpful vote Comments

N***t

Nepal

Verified Purchase

5 .0

2024-01-06

Perfect 80km reach.

41 Helpful vote Comments

M***z

Canada

Verified Purchase

5 .0

2024-01-05

Goods as advertised. Shipping great. Recommended!

13 Helpful vote Comments

S***a

Lithuania

Verified Purchase

5 .0

2023-12-14

This is my second purchase from Link-pp and I am well pleased in all aspects of the transactions.

41 Helpful vote Comments

G***g

United Arab Emirates

Verified Purchase

5 .0

2023-11-14

They were very professional.I will definitely buy from them again.

24 Helpful vote Comments

R***n

Turkey

Verified Purchase

5 .0

2023-11-13

Good products, I was so happy with them I orded a few more and will now be using them as my go to 10/25/40G Transceiver Modules.

53 Helpful vote Comments

D***i

Belgium

Verified Purchase

5 .0

2023-10-06

Good price on what I was looking for and was delivered in a prompt manner. Nothing extraordinary, just what a normal transaction should be really.

61 Helpful vote Comments

W***d

Ireland

Verified Purchase

5 .0

2023-08-22

Experience was fine so far. Happy to respond again after delivery.

20 Helpful vote Comments

M***d

Indonesia

Verified Purchase

5 .0

2023-07-19

It arrived in new condition and on time. Thank you!

82 Helpful vote Comments

I***b

United States

Verified Purchase

5 .0

2023-05-25

Product delivered as promised. Flawless experience!

21 Helpful vote Comments

C***l

Nepal

Verified Purchase

5 .0

2023-04-23

Product exactly as described and arrived very quickly.

36 Helpful vote Comments

T***e

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2023-01-13

Very easy to find what I need.

50 Helpful vote Comments

Verified Purchase

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LINK-PP LS-BL49551G-80I 1G BiDi SFP 1490nm-TX/1550nm-RX 80km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

Product Details

LINK-PP LS-BL49551G-80I 1G BiDi SFP Specifications

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Key Features of LINK-PP LS-BL49551G-80I 1G BiDi SFP

LINK-PP LS-BL49551G-80I 1G BiDi SFP Optical Module

LS-BL49551G-80I: Reliable 1.25 Gbps Connectivity for Efficient Gigabit Connectivity

LS-BL49551G-80I Module with 1490nm-TX/1550nm-RX Wavelength

LS-BL49551G-80I Module Supporting 80km Transmission

LS-BL49551G-80I Module with Simplex LC Interface

LS-BL49551G-80I Module with DOM for Real-Time Monitoring

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