What specific complementary transceiver is required on the far end of the 100km single strand fiber link?

Because this module transmits at 1490nm (TX) and receives at 1550nm (RX), the opposite side of the single-strand fiber link must use a matching 1G BiDi SFP with 1550nm-TX and 1490nm-RX (such as the LINK-PP LS-BL55491G-A0I) to complete bidirectional transmission.

Does this module support real-time Digital Diagnostics Monitoring (DDM/DOM) over SNMP?

Yes, full DDM/DOM telemetry is integrated. Network engineers can query real-time RX/TX optical power levels, transceiver operating temperature, supply voltage, and laser bias current through switch CLI, Web GUI, or NMS SNMP polling.

Can I test or use this 100km ultra-long-reach SFP module on a short fiber link under 20km?

We advise caution when running 100km optics on short spans under 20km–30km. Due to the high launch optical power needed for 100km reach, connecting directly over short fiber without optical attenuation can saturate or permanently damage the receiver. We recommend using an in-line 10dB–15dB optical attenuator during lab testing or short runs.

Is this LINK-PP LS-BL49551G-A0I 100km BiDi SFP transceiver compatible with Cisco and MikroTik switches without triggering vendor lock errors?

Yes, the LS-BL49551G-A0I is pre-coded for full MSA and broad OEM compatibility, including Cisco, MikroTik, Ubiquiti, Juniper, and standard multi-vendor network switches. It supports hot-swappable plug-and-play operation without requiring forced EEPROM overrides.

What temperature range can this industrial-grade module withstand in unheated outdoor cabinets?

The LS-BL49551G-A0I is an industrial-grade optic engineered for harsh ambient environments with an operating temperature range of -40°C to +85°C (-40°F to +185°F). Built-in DDM/DOM continuously reports internal temperature, laser bias, and RX/TX optical power via SNMP.

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

Name: LINK-PP LS-BL49551G-A0I 1G BiDi SFP 1490nm-TX/1550nm-RX 100km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 183724
Price: 25.37 USD
Availability: InStock
Rating: 5 (28 reviews)

# 183724

Product: LINK-PP LS-BL49551G-A0I 1G BiDi SFP 1490nm-TX/1550nm-RX 100km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
SKU: 183724
P/N: LS-BL49551G-A0I
Price: $ 29.5
Stock: 890 in Stock
Sold: 1.1K
Product URL: https://www.l-p.com/products/478684.htm

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Manufacture: LINK-PP

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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-A0I 1G BiDi SFP Specifications

The LINK-PP LS-BL49551G-A0I 1G BiDi SFP transceiver supports 1.25 Gbps data transmission over single-mode fiber up to 100 km, operating with a transmit wavelength of 1490 nm and a receive wavelength of 1550 nm. It is designed for industrial-grade environments, ensuring reliable performance under demanding conditions.

LINK-PP Part Number	LS-BL49551G-A0I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1490nm-TX/1550nm-RX	Max Cable Distance	100km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB BiDi	Receiver Type	PIN
TX Power	0 to +5dBm	RX Power	-28 to -1dBm
Receiver Sensitivity	<-28dBm	Receiver Overload	-1dBm
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: What specific complementary transceiver is required on the far end of the 100km single strand fiber link? By A***a on 2026-02-01

A: Because this module transmits at 1490nm (TX) and receives at 1550nm (RX), the opposite side of the single-strand fiber link must use a matching 1G BiDi SFP with 1550nm-TX and 1490nm-RX (such as the LINK-PP LS-BL55491G-A0I) to complete bidirectional transmission. By admin on 2026-02-02
Q: Does this module support real-time Digital Diagnostics Monitoring (DDM/DOM) over SNMP? By I***z on 2025-05-10

A: Yes, full DDM/DOM telemetry is integrated. Network engineers can query real-time RX/TX optical power levels, transceiver operating temperature, supply voltage, and laser bias current through switch CLI, Web GUI, or NMS SNMP polling. By admin on 2025-05-10
Q: Can I test or use this 100km ultra-long-reach SFP module on a short fiber link under 20km? By J***z on 2025-03-27

A: We advise caution when running 100km optics on short spans under 20km–30km. Due to the high launch optical power needed for 100km reach, connecting directly over short fiber without optical attenuation can saturate or permanently damage the receiver. We recommend using an in-line 10dB–15dB optical attenuator during lab testing or short runs. By admin on 2025-03-27
Q: Is this LINK-PP LS-BL49551G-A0I 100km BiDi SFP transceiver compatible with Cisco and MikroTik switches without triggering vendor lock errors? By N***s on 2024-12-06

A: Yes, the LS-BL49551G-A0I is pre-coded for full MSA and broad OEM compatibility, including Cisco, MikroTik, Ubiquiti, Juniper, and standard multi-vendor network switches. It supports hot-swappable plug-and-play operation without requiring forced EEPROM overrides. By admin on 2024-12-06
Q: What temperature range can this industrial-grade module withstand in unheated outdoor cabinets? By F***t on 2024-10-16

A: The LS-BL49551G-A0I is an industrial-grade optic engineered for harsh ambient environments with an operating temperature range of -40°C to +85°C (-40°F to +185°F). Built-in DDM/DOM continuously reports internal temperature, laser bias, and RX/TX optical power via SNMP. By admin on 2024-10-17

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N***n

Ukraine

Verified Purchase

5 .0

2026-07-17

Ordered 10 units for an ISP network upgrade. All transceivers passed burn-in testing with clean optical eye diagrams.

37 Helpful vote Comments

R***s

Bangladesh

Verified Purchase

4 .0

2026-07-11

The LS-BL49551G-A0I 100km optical transceiver performs flawlessly over our 88km span, but the outer shipping carton was slightly crushed during transit. Optic was well protected in static shielding though.

71 Helpful vote Comments

E***n

Austria

Verified Purchase

5 .0

2026-07-05

100% works.

3 Helpful vote Comments

W***n

Belarus

Verified Purchase

5 .0

2026-05-29

Fully compatible.

57 Helpful vote Comments

E***g

Thailand

Verified Purchase

5 .0

2026-05-25

Upgraded our rural fiber ring with the LS-BL49551G-A0I BiDi transceivers. DDM monitoring provides continuous light level diagnostics into our Zabbix network monitor, alerting us to macro-bends before link failure occurs. Exceptional sensitivity on the 1550nm RX port for 100km links :-)

25 Helpful vote Comments

E***s

Sweden

Verified Purchase

5 .0

2026-04-07

Required industrial temperature ratings (-40C to 85C) for roadside traffic monitoring cabinets in Minnesota. DOM telemetry gives accurate temperature and laser bias voltage right to our monitoring dash. =)

25 Helpful vote Comments

M***l

Bulgaria

Verified Purchase

5 .0

2026-03-22

Plug and play.

54 Helpful vote Comments

A***n

Singapore

Verified Purchase

5 .0

2026-01-31

Zero issues.

8 Helpful vote Comments

A***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2026-01-22

Flawless performance.

47 Helpful vote Comments

A***t

Bulgaria

Verified Purchase

5 .0

2025-12-18

Simplex LC single mode connector saves patch panel space on long reach deployments. Link link-up time was instantaneous.

80 Helpful vote Comments

O***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-11-05

Bench tested the LINK-PP 1.25G 100km BiDi LC SFP using an EXFO OTDR set before field deployment. Signal degradation was minimal across 95km, and real-time DOM diagnostics reported exact optical power levels within 0.2 dB of our power meter. Essential optic for long haul municipal network backbones :-D

54 Helpful vote Comments

A***n

Netherlands

Verified Purchase

5 .0

2025-08-06

Fast delivery! :-)

87 Helpful vote Comments

A***s

South Africa

Verified Purchase

5 .0

2025-07-09

Fair price and solid specs for 100km single strand fiber runs. Good optical power budget for high loss splices.

1 Helpful vote Comments

G***z

Sweden

Verified Purchase

5 .0

2025-06-08

Highly recommended.

28 Helpful vote Comments

A***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-05-16

Solid optic. ;)

80 Helpful vote Comments

C***t

Israel

Verified Purchase

5 .0

2025-04-19

Top quality.

53 Helpful vote Comments

D***e

Canada

Verified Purchase

5 .0

2025-04-02

Tested compatibility across Cisco Catalyst and Ubiquiti EdgeSwitch gear. Recognized immediately without CLI workaround scripts.

100 Helpful vote Comments

S***l

Argentina

Verified Purchase

5 .0

2024-12-26

Deployed these industrial grade 100km SFP modules in remote electrical substations. The wide operating temperature range handles non-climate-controlled enclosures easily. Coupled with matching 1550TX/1490RX units on the head-end, we established ultra-reliable telemetry links across 85km. Highly impressed with LINK-PP optics! =D

36 Helpful vote Comments

A***z

Italy

Verified Purchase

5 .0

2024-12-26

Great B2B purchasing experience. Modules arrived pre-coded for our HP ProCurve switches and linked up on the first try.

53 Helpful vote Comments

J***n

France

Verified Purchase

5 .0

2024-12-15

Excellent 1G 1490nm-TX/1550nm-RX optic for long-distance link budget requirements. Low power consumption and cool operation. ;)

35 Helpful vote Comments

C***r

United States

Verified Purchase

5 .0

2024-10-18

Using these for long haul campus interconnection. The 1490/1550 WDM setup solved our fiber strand exhaustion issue completely.

13 Helpful vote Comments

R***s

Japan

Verified Purchase

5 .0

2024-06-25

Installed this 1G BiDi SFP 100km transceiver in our remote wireless backhaul tower. Link synced immediately across 82km of single mode fiber without any packet drop.

64 Helpful vote Comments

C***n

Belarus

Verified Purchase

5 .0

2024-06-13

Great price for a true 100km 1000BASE-EZX BiDi SFP module. Recognized seamlessly on our MikroTik CCR2116 without vendor lock errors.

36 Helpful vote Comments

A***s

Morocco

Verified Purchase

5 .0

2024-04-16

Decent budget long-range optic for regional WISP backhaul. Does 100km single-strand fiber transmission as specified at a fraction of brand-name prices.

100 Helpful vote Comments

E***z

Australia

Verified Purchase

5 .0

2024-03-27

Super reliable.

4 Helpful vote Comments

P***s

Maldives

Verified Purchase

5 .0

2024-03-25

Replaced expensive OEM transceivers with these LINK-PP 100km simplex LC SMF transceivers. Attenuation stayed stable even during freezing winter temperatures.

45 Helpful vote Comments

K***t

Germany

Verified Purchase

5 .0

2024-02-10

Works great. =D

65 Helpful vote Comments

M***h

Cambodia

Verified Purchase

5 .0

2024-01-29

We deployed a pair of LINK-PP LS-BL49551G-A0I transceivers across a 91km inter-city fiber span between our edge pops. DDM optics reading shows optical RX power at -24.8 dBm on our Juniper EX switches, comfortably above receiver sensitivity threshold. The 1490nm-TX 1550nm-RX configuration cut our leased strand costs in half. High build quality! :D

99 Helpful vote Comments