Can this 1G BiDi SFP module work with Cisco, Huawei, and H3C gigabit switches?

Yes. The LS-BL49311G-20I is designed for multi-brand compatibility and can be customized with OEM coding for major network platforms. It supports standard SFP MSA compliance and is widely used with Cisco, Huawei, H3C, MikroTik, and other gigabit Ethernet equipment.

Does the module support outdoor or industrial environments with temperature changes?

Yes. This industrial-grade 1G BiDi SFP supports a wide operating temperature range of -40°C to +85°C. It also includes DOM/DDM monitoring for real-time tracking of optical power, temperature, and voltage, helping engineers maintain remote network connections.

What fiber type and distance can this industrial BiDi SFP support?

This module uses simplex LC single-mode fiber (SMF) and supports up to 20km transmission. It uses 1490nm-TX and 1310nm-RX BiDi wavelength technology, making it suitable for long-distance campus networks, industrial links, and telecom access applications.

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LINK-PP LS-BL49311G-20I 1G BiDi SFP 1490nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL49311G-20I 1G BiDi SFP 1490nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 183658
Price: 13.33 USD
Availability: InStock
Rating: 4.9 (28 reviews)

# 183658

Product: LINK-PP LS-BL49311G-20I 1G BiDi SFP 1490nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
SKU: 183658
P/N: LS-BL49311G-20I
Price: $ 15.5
Stock: 1300 in Stock
Sold: 780
Product URL: https://www.l-p.com/products/478628.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

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28 Reviews

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Manufacture: LINK-PP

P/N: LS-BL49311G-20I

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-BL49311G-20I 1G BiDi SFP Specifications

The LINK-PP LS-BL49311G-20I 1G BiDi SFP transceiver provides a data transmission speed of 1.25 Gbps over a distance of up to 20 km using single-mode fiber. It operates at 1490nm for transmission and 1310nm for reception. This industrial-grade module offers stable, reliable connectivity, even in challenging environments.

LINK-PP Part Number	LS-BL49311G-20I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1490nm-TX/1310nm-RX	Max Cable Distance	20km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB BiDi	Receiver Type	PIN
TX Power	-9 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	<-23dBm	Receiver Overload	-1dBm
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Can this 1G BiDi SFP module work with Cisco, Huawei, and H3C gigabit switches? By J***r on 2025-12-01

A: Yes. The LS-BL49311G-20I is designed for multi-brand compatibility and can be customized with OEM coding for major network platforms. It supports standard SFP MSA compliance and is widely used with Cisco, Huawei, H3C, MikroTik, and other gigabit Ethernet equipment. By admin on 2025-12-02
Q: Does the module support outdoor or industrial environments with temperature changes? By J***k on 2025-05-21

A: Yes. This industrial-grade 1G BiDi SFP supports a wide operating temperature range of -40°C to +85°C. It also includes DOM/DDM monitoring for real-time tracking of optical power, temperature, and voltage, helping engineers maintain remote network connections. By admin on 2025-05-21
Q: What fiber type and distance can this industrial BiDi SFP support? By R***t on 2024-04-13

A: This module uses simplex LC single-mode fiber (SMF) and supports up to 20km transmission. It uses 1490nm-TX and 1310nm-RX BiDi wavelength technology, making it suitable for long-distance campus networks, industrial links, and telecom access applications. By admin on 2024-04-13

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P***n

Bulgaria

Verified Purchase

5 .0

2026-05-10

Nice industrial optical module for harsh locations. We installed several units in outdoor enclosures and they have maintained stable gigabit links.

58 Helpful vote Comments

E***z

Hungary

Verified Purchase

5 .0

2026-03-30

Perfect for our fiber-to-building project. The 1490nm/1310nm BiDi wavelength design reduced fiber usage and helped us complete the installation faster.

46 Helpful vote Comments

F***e

Bulgaria

Verified Purchase

5 .0

2026-03-07

We used these 1G BiDi SFP 1490nm-TX/1310nm-RX modules for a factory campus backbone upgrade. The simplex LC SMF design saved fiber resources, and the 20km transmission distance works well across our buildings. Compatibility with our Cisco and H3C switches was smooth.

23 Helpful vote Comments

M***s

Bulgaria

Verified Purchase

5 .0

2026-03-02

Used for a base station backhaul project where fiber distance was around 18km. This 1490nm TX/1310nm RX BiDi SFP handled the link without any adjustment. The industrial temperature rating gives us extra confidence for outdoor cabinets.

11 Helpful vote Comments

R***t

Norway

Verified Purchase

5 .0

2026-01-15

Excellent 20km reach for our campus fiber network.

5 Helpful vote Comments

R***z

Romania

Verified Purchase

5 .0

2026-01-05

Fast deployment and good performance. We tested the SFP modules with several vendor switches before production rollout. No compatibility problems so far.

65 Helpful vote Comments

P***s

Israel

Verified Purchase

5 .0

2025-11-16

Great compatibility with our industrial switches. =)

76 Helpful vote Comments

A***n

Australia

Verified Purchase

5 .0

2025-11-03

We purchased these for a server room refresh and batch deployment. Installation was simple, DOM diagnostics were available immediately, and the modules worked well with our existing network hardware.

62 Helpful vote Comments

R***e

Republic of Korea

Verified Purchase

5 .0

2025-09-09

Reliable industrial SFP for remote sites.

97 Helpful vote Comments

F***s

Philippines

Verified Purchase

5 .0

2025-08-21

Used these for a large-scale network rollout with many remote endpoints. Stable 1000Mbps connectivity, good DOM monitoring, and simple LC fiber installation. Highly recommended.

45 Helpful vote Comments

H***z

Russian Federation

Verified Purchase

5 .0

2025-08-15

Reliable choice for OEM compatible SFP replacement. The modules passed our lab testing with no issues, and bulk ordering was easy.

37 Helpful vote Comments

R***r

Japan

Verified Purchase

5 .0

2025-08-01

Excellent choice for network expansion. The 1000BASE-BX 20km SFP module supports our fiber distribution project well, especially where only one fiber strand was available.

74 Helpful vote Comments

A***n

Norway

Verified Purchase

5 .0

2025-06-26

Stable 1G transmission over 20km SMF, exactly as described. The LS-BL49311G-20I compatible transceiver is a good fit for long-distance office and industrial Ethernet links.

98 Helpful vote Comments

E***t

Germany

Verified Purchase

5 .0

2025-06-13

Worked as expected in our gigabit access network. The optical budget is suitable for our 20km links, and the industrial temperature range is a major advantage for remote installations.

86 Helpful vote Comments

S***s

Russian Federation

Verified Purchase

5 .0

2025-05-05

The product quality is impressive for the price. We needed industrial-grade BiDi SFPs for outdoor communication cabinets, and these modules provided reliable connectivity with useful DDM monitoring.

53 Helpful vote Comments

S***n

Israel

Verified Purchase

5 .0

2025-04-20

We tested this LINK-PP 1G BiDi SFP transceiver across Cisco, Huawei, and H3C switches. The coding and interoperability were good, and the DOM information matched our diagnostic tools.

10 Helpful vote Comments

A***e

Brunei Darussalam

Verified Purchase

5 .0

2025-03-19

Solid 1G BiDi SFP module for our fiber links.

99 Helpful vote Comments

S***s

Maldives

Verified Purchase

4 .0

2025-02-25

Performance is good and the module works correctly. Shipping packaging could be improved slightly, but the 1G BiDi SFP itself has been stable in our network.

12 Helpful vote Comments

F***z

Mexico

Verified Purchase

5 .0

2025-01-10

Very reliable replacement for expensive branded optics. The simplex LC connector and single-mode fiber support helped simplify our existing fiber layout. Great product for enterprise fiber extension projects. =D

57 Helpful vote Comments

S***z

New Zealand

Verified Purchase

5 .0

2025-01-07

Good value for large deployments. We installed these 1000BASE-BX compatible SFP modules in a mixed-brand environment with Huawei and MikroTik equipment. The OEM compatibility testing passed quickly, and the optical performance has been consistent. ;)

100 Helpful vote Comments

T***z

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-01-03

Great option for telecom access networks. We deployed the industrial BiDi SFP 1G 20km LC SMF transceiver in several remote locations, and the connection has stayed stable with no packet loss. The DOM feature makes troubleshooting much easier.

73 Helpful vote Comments

F***z

Macao

Verified Purchase

5 .0

2024-11-13

Works perfectly :)

51 Helpful vote Comments

M***z

Romania

Verified Purchase

5 .0

2024-08-25

Plugged in and worked right away :D

88 Helpful vote Comments

A***r

Turkey

Verified Purchase

4 .0

2024-07-08

Product arrived with slightly delayed delivery, but the optical performance and compatibility are excellent. We are already planning another purchase.

11 Helpful vote Comments

K***s

Indonesia

Verified Purchase

5 .0

2024-04-01

Clean install, stable signal, no issues.

50 Helpful vote Comments

S***r

Japan

Verified Purchase

5 .0

2024-03-13

Good DOM monitoring and accurate optical readings.

80 Helpful vote Comments

S***k

Russian Federation

Verified Purchase

5 .0

2024-02-29

These LINK-PP LS-BL49311G-20I compatible SFP modules replaced higher-cost OEM optics in our network. We tested them on multiple gigabit switches and media converters, and the 1490nm transmit / 1310nm receive wavelength pairing performed reliably over 20km single mode fiber.

20 Helpful vote Comments

J***y

Brazil

Verified Purchase

5 .0

2024-01-20

Bought a batch of industrial 1G BiDi SFP transceiver modules for outdoor cabinets and access points. The -40°C to +85°C operating range is exactly what we needed. DDM data is helpful for checking Tx/Rx power during maintenance. Very satisfied :-)

48 Helpful vote Comments