Can I use this module for an outdoor fiber link around 70–80km?

Yes. It is designed for up to 80km transmission over single-mode fiber. As long as the total optical loss is within the link budget, it is suitable for outdoor cabinets, campus networks, telecom backhaul, and long-distance enterprise connections.

Is DOM/DDM supported for optical diagnostics?

Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing you to monitor transmit power, receive power, temperature, supply voltage, and laser bias current through your switch.

Can this 1G BiDi SFP work with Cisco, Juniper, Aruba, or MikroTik switches?

Yes. OEM coding is available for major switch vendors. Just specify your equipment brand before ordering, and the module will be programmed for plug-and-play compatibility.

Can it connect to another vendor's 1270nm-TX/1330nm-RX BiDi SFP?

Yes. As long as the remote transceiver uses the complementary wavelength pair (1270nm TX / 1330nm RX), has the same Gigabit Ethernet standard, and the link budget is compatible, they can communicate normally even if the brands are different.

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LINK-PP LS-BL33271G-80C 1G BiDi SFP 1330nm-TX/1270nm-RX 80km DOM LC SMF Optical Transceiver Module

Name: LINK-PP LS-BL33271G-80C 1G BiDi SFP 1330nm-TX/1270nm-RX 80km DOM LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 203925
Price: 16.856 USD
Availability: InStock
Rating: 5 (25 reviews)

# 203925

Product: LINK-PP LS-BL33271G-80C 1G BiDi SFP 1330nm-TX/1270nm-RX 80km DOM LC SMF Optical Transceiver Module
SKU: 203925
P/N: LS-BL33271G-80C
Price: $ 19.6
Stock: 850 in Stock
Sold: 2.2K
Product URL: https://www.l-p.com/products/493371.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

25 Reviews

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Manufacture: LINK-PP

P/N: LS-BL33271G-80C

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-BL33271G-80C 1G BiDi SFP Specifications

The LINK-PP LS-BL33271G-80C 1G BiDi SFP transceiver is built for long-reach single-mode fiber links. It operates at a transmit wavelength of 1330nm and a receive wavelength of 1270nm through a simplex LC port, facilitating robust full-duplex communication over a single fiber, reaching up to 80 km.

LINK-PP Part Number	LS-BL33271G-80C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1330nm-TX/1270nm-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	0 to 70°C	Protocols	IEEE 802.3ae, SFP+ MSA, SFF-8431, SFF-8472, CPRI

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Q: Can I use this module for an outdoor fiber link around 70–80km? By A***r on 2026-04-26

A: Yes. It is designed for up to 80km transmission over single-mode fiber. As long as the total optical loss is within the link budget, it is suitable for outdoor cabinets, campus networks, telecom backhaul, and long-distance enterprise connections. By admin on 2026-04-26
Q: Is DOM/DDM supported for optical diagnostics? By S***n on 2025-05-22

A: Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing you to monitor transmit power, receive power, temperature, supply voltage, and laser bias current through your switch. By admin on 2025-05-22
Q: Can this 1G BiDi SFP work with Cisco, Juniper, Aruba, or MikroTik switches? By W***z on 2024-10-28

A: Yes. OEM coding is available for major switch vendors. Just specify your equipment brand before ordering, and the module will be programmed for plug-and-play compatibility. By admin on 2024-10-28
Q: Can it connect to another vendor's 1270nm-TX/1330nm-RX BiDi SFP? By L***z on 2024-07-29

A: Yes. As long as the remote transceiver uses the complementary wavelength pair (1270nm TX / 1330nm RX), has the same Gigabit Ethernet standard, and the link budget is compatible, they can communicate normally even if the brands are different. By admin on 2024-07-30

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Lucy Wilson

Argentina

Verified Purchase

5 .0

2026-01-19

Purchased these for a campus fiber backbone upgrade. The 80km specification gave us plenty of optical margin even though our actual link is much shorter. Very satisfied with the performance.

73 Helpful vote Comments

Hailey Johnson

Nepal

Verified Purchase

5 .0

2026-01-15

We deployed these 1G BiDi SFP modules between two municipal buildings about 72km apart. DOM monitoring helped us verify optical power before putting the circuit into production. Compatible with our Cisco and Juniper switches without any manual configuration. Link has been stable for weeks with zero packet loss. Great replacement for OEM optics and much better pricing. :)

56 Helpful vote Comments

Jeffrey Thompson

New Zealand

Verified Purchase

4 .0

2026-01-08

Product quality is excellent and performance is exactly as advertised. The only issue was that one box arrived slightly dented during shipping, but the transceiver itself worked perfectly. I'd definitely buy again.

79 Helpful vote Comments

Kayla White

Maldives

Verified Purchase

5 .0

2025-12-23

We use these for surveillance uplinks between remote facilities. Excellent optical performance and reliable DOM monitoring.

4 Helpful vote Comments

Brian Garcia

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-10-07

Installed one pair for a customer connecting two warehouses over leased dark fiber. Stable Gigabit Ethernet speed and no compatibility warnings on Dell switches.

71 Helpful vote Comments

Claire Sanchez

Norway

Verified Purchase

5 .0

2025-08-08

Works well in our outdoor cabinet deployment. Link stays stable during hot afternoons and cold nights.

96 Helpful vote Comments

Sarah Robinson

Indonesia

Verified Purchase

5 .0

2025-07-15

Fast shipping and the optical parameters matched the datasheet exactly. Great experience.

88 Helpful vote Comments

Scott Morgan

Singapore

Verified Purchase

5 .0

2025-07-09

Great compatibility with multiple switch brands including Cisco, HPE, and Edge-Core. Makes inventory management much easier. :)

19 Helpful vote Comments

Brandon Adams

United Arab Emirates

Verified Purchase

5 .0

2025-07-08

Excellent value compared with branded optics.

52 Helpful vote Comments

Benjamin Green

Brazil

Verified Purchase

5 .0

2025-05-29

Using these with MikroTik equipment. The modules negotiated perfectly and have been running nonstop for over a month.

73 Helpful vote Comments

Allison Stewart

Austria

Verified Purchase

5 .0

2025-05-14

Good OEM compatibility. Worked perfectly in our HPE switch.

3 Helpful vote Comments

Emma Jones

Ukraine

Verified Purchase

5 .0

2025-05-11

Using these for telecom backhaul between outdoor cabinets. The 80km reach and 1330nm-TX/1270nm-RX wavelength combination matched our existing network perfectly. Digital diagnostics make troubleshooting much easier, especially when checking transmit and receive optical power remotely. We've now deployed more than 60 modules across multiple sites and haven't experienced a single hardware failure. Highly recommended for long-distance Gigabit fiber deployments.

56 Helpful vote Comments

Leah Evans

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-03-24

DOM readings are accurate and easy to monitor. :)

36 Helpful vote Comments

Paige Thompson

Taiwan, Province of China

Verified Purchase

5 .0

2025-03-11

Stable 1.25G connection over a long rural fiber run. Exactly what we needed.

97 Helpful vote Comments

Jonathan Adams

Hong Kong

Verified Purchase

5 .0

2025-01-19

Reliable 1330nm TX / 1270nm RX pairing. No issues so far.

37 Helpful vote Comments

Jacob Turner

Russian Federation

Verified Purchase

5 .0

2024-07-30

Ordered 20 pieces, every one passed testing.

3 Helpful vote Comments

Olivia Cook

Hong Kong

Verified Purchase

5 .0

2024-07-22

Solid signal across our campus network. Happy purchase! ^^

15 Helpful vote Comments

Sarah Phillips

Russian Federation

Verified Purchase

5 .0

2024-07-01

LC connector fit perfectly. Installation took seconds.

34 Helpful vote Comments

Matthew Hernandez

Bulgaria

Verified Purchase

5 .0

2024-06-16

Installed in an industrial control network running single-mode fiber. The modules handled continuous operation without any instability. Temperature stayed within spec and DOM values remained consistent throughout our burn-in testing.

83 Helpful vote Comments

Emma Miller

Nepal

Verified Purchase

5 .0

2024-05-27

Packaging was simple but secure. Every module passed incoming inspection with excellent TX/RX optical power.

18 Helpful vote Comments

Brooke White

Denmark

Verified Purchase

5 .0

2024-04-30

Bought these as OEM replacements for our data room. Stable 1G BiDi fiber connectivity and very competitive pricing.

6 Helpful vote Comments

Christian Thomas

Thailand

Verified Purchase

5 .0

2024-03-23

Long-distance link came up immediately. Great module.

82 Helpful vote Comments

Hannah Robinson

Macao

Verified Purchase

5 .0

2024-03-16

Nice choice for long-distance enterprise fiber links. OEM coding was correct and installation was plug-and-play. ^^

58 Helpful vote Comments

Donald Lee

Norway

Verified Purchase

5 .0

2024-01-27

We replaced expensive OEM transceivers with these compatible modules. Every unit was recognized immediately by Aruba switches. Saved a significant amount on the project budget. :)

23 Helpful vote Comments

Christopher Campbell

Morocco

Verified Purchase

5 .0

2024-01-16

Plugged into our Cisco switch and linked up instantly. Great 80km BiDi SFP :)

4 Helpful vote Comments