What makes this 1550nm-TX/1310nm-RX BiDi SFP different from a normal duplex SFP?

This BiDi SFP uses WDM technology to send and receive signals on different wavelengths through a single fiber strand, reducing fiber usage compared with traditional duplex SFP modules. It is ideal for network upgrades where fiber resources are limited.

Will this industrial BiDi SFP work with my existing network switch from another brand?

Yes. This module supports OEM-compatible coding options for many major networking platforms. Please select the correct compatibility version when ordering to ensure seamless integration with your switch or router.

Is this 1G SFP suitable for outdoor cabinets and industrial Ethernet applications?

Yes. LS-BL55311G-20I is an industrial-grade optical transceiver designed for demanding environments. Its wide operating temperature range, DOM/DDM monitoring, and stable 1Gbps transmission make it suitable for outdoor cabinets, industrial networks, telecom access, and remote fiber deployments.

Can LS-BL55311G-20I support a 20km connection using standard single-mode fiber?

Yes. LS-BL55311G-20I is a 1G BiDi SFP transceiver designed for up to 20km transmission over single-mode fiber (SMF). It uses a simplex LC interface with 1550nm-TX and 1310nm-RX WDM technology to transmit and receive data through one fiber strand.

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Dahua GSFP-1310R-20-SMF Compatible LINK-PP 1G BiDi SFP 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)

Name: Dahua GSFP-1310R-20-SMF Compatible LINK-PP 1G BiDi SFP 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 220757
Price: 7.31 USD
Availability: InStock
Rating: 5 (19 reviews)

# 220757

Product: Dahua GSFP-1310R-20-SMF Compatible LINK-PP 1G BiDi SFP 1550nm-TX/1310nm-RX 20km DOM Simplex LC SMF Optical Transceiver Module (Industrial)
SKU: 220757
P/N: LS-BL55311G-20I
Price: $ 8.5
Stock: 678 in Stock
Sold: 531
Product URL: https://www.l-p.com/products/494855.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

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Manufacture: LINK-PP

P/N: LS-BL55311G-20I

Compatible:: LINK-PP; Dahua

Compatible P/N:: GSFP-1310R-20-SMF | 20km; GSFP-1310T-20-SMF | 20km

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Dahua GSFP-1310R-20-SMF Compatible LINK-PP 1G BiDi SFP Specifications

The Dahua GSFP-1310R-20-SMF Compatible LINK-PP module is a 1.25 Gbps BiDi optical transceiver designed to transmit data over distances of up to 20 kilometers. It operates using a 1550nm transmit and 1310nm receive wavelength pairing, enabling efficient bidirectional communication over a single fiber strand.

Dahua Part Number	GSFP-1310R-20-SMF	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1550nm-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: What makes this 1550nm-TX/1310nm-RX BiDi SFP different from a normal duplex SFP? By C***z on 2026-06-25

A: This BiDi SFP uses WDM technology to send and receive signals on different wavelengths through a single fiber strand, reducing fiber usage compared with traditional duplex SFP modules. It is ideal for network upgrades where fiber resources are limited. By admin on 2026-06-26
Q: Will this industrial BiDi SFP work with my existing network switch from another brand? By E***r on 2025-12-30

A: Yes. This module supports OEM-compatible coding options for many major networking platforms. Please select the correct compatibility version when ordering to ensure seamless integration with your switch or router. By admin on 2025-12-30
Q: Is this 1G SFP suitable for outdoor cabinets and industrial Ethernet applications? By K***l on 2025-11-17

A: Yes. LS-BL55311G-20I is an industrial-grade optical transceiver designed for demanding environments. Its wide operating temperature range, DOM/DDM monitoring, and stable 1Gbps transmission make it suitable for outdoor cabinets, industrial networks, telecom access, and remote fiber deployments. By admin on 2025-11-18
Q: Can LS-BL55311G-20I support a 20km connection using standard single-mode fiber? By J***n on 2025-06-15

A: Yes. LS-BL55311G-20I is a 1G BiDi SFP transceiver designed for up to 20km transmission over single-mode fiber (SMF). It uses a simplex LC interface with 1550nm-TX and 1310nm-RX WDM technology to transmit and receive data through one fiber strand. By admin on 2025-06-16

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G***r

India

Verified Purchase

5 .0

2026-07-14

Bought these for a base station backhaul upgrade. The 1550nm transmit and 1310nm receive wavelength combination matched our existing BiDi fiber design perfectly.

76 Helpful vote Comments

E***y

Iran, Islamic Republic of

Verified Purchase

5 .0

2026-06-09

Great industrial optic for remote sites.

76 Helpful vote Comments

S***k

Italy

Verified Purchase

5 .0

2026-02-22

Perfect replacement for expensive branded optics :D

42 Helpful vote Comments

N***n

Philippines

Verified Purchase

5 .0

2026-02-01

Good value fiber optic solution =)

34 Helpful vote Comments

Z***s

New Zealand

Verified Purchase

5 .0

2025-08-22

We use these 1G BiDi SFP 20km modules for connecting remote buildings in our enterprise network. The simplex LC fiber design helped reduce cabling costs, and the optical performance has been stable since installation.

21 Helpful vote Comments

P***e

Taiwan, Province of China

Verified Purchase

5 .0

2025-07-25

Nice optics for enterprise networks ;)

24 Helpful vote Comments

R***s

Singapore

Verified Purchase

5 .0

2025-07-23

Our company needed simplex LC 1G BiDi SFP modules for a building-to-building connection. These 20km SMF optics delivered stable performance with our existing switches.

77 Helpful vote Comments

D***r

United Kingdom

Verified Purchase

5 .0

2025-04-17

We used LS-BL55311G-20I for a campus fiber expansion project. The 1G BiDi SFP 20km transmission works perfectly over our existing single-mode fiber, and DOM monitoring helps our team track signal health remotely.

14 Helpful vote Comments

A***s

Singapore

Verified Purchase

5 .0

2025-03-26

Great option for outdoor cabinets and remote access networks. The industrial temperature range gives us extra confidence compared with standard commercial SFP modules.

66 Helpful vote Comments

E***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-03-21

Excellent BiDi SFP module, stable link all day :)

45 Helpful vote Comments

J***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-02-20

Reliable module for long-distance fiber connections.

35 Helpful vote Comments

A***h

Sweden

Verified Purchase

5 .0

2025-01-07

Our technicians tested this 1000BASE-BX20 compatible SFP with multiple OEM switches before deployment. Compatibility was excellent and the fiber links came online immediately.

66 Helpful vote Comments

P***r

Netherlands

Verified Purchase

5 .0

2024-12-12

We tested this 1G SFP 20km industrial transceiver in a mixed-brand environment with Cisco and other OEM-compatible equipment. EEPROM coding matched our requirements and deployment was smooth.

49 Helpful vote Comments

J***s

Bangladesh

Verified Purchase

5 .0

2024-06-05

Perfect for remote office and industrial network links =D

94 Helpful vote Comments

J***t

Maldives

Verified Purchase

5 .0

2024-02-13

We deployed over 30 units for telecom backhaul applications. The 20km BiDi SFP transceiver provides stable 1Gbps connectivity, and the DDM function makes troubleshooting much easier for our NOC team.

68 Helpful vote Comments

W***r

Morocco

Verified Purchase

5 .0

2024-02-10

Fast installation and clean diagnostics.

45 Helpful vote Comments

J***n

Russian Federation

Verified Purchase

5 .0

2024-01-25

Good compatibility, low power usage, and stable 1G performance for our fiber infrastructure.

80 Helpful vote Comments

M***s

Canada

Verified Purchase

5 .0

2024-01-23

We installed a large batch of LS-BL55311G-20I modules across several locations. The 20km single-mode fiber transmission distance is accurate, DOM readings are useful, and all units have been running without errors.

11 Helpful vote Comments

S***s

Republic of Korea

Verified Purchase

5 .0

2024-01-14

Used these in an industrial Ethernet project. The LS-BL55311G-20I handles temperature changes well and maintains stable optical power levels.

52 Helpful vote Comments