Can I use this module for long-distance enterprise fiber links?

Yes. It's designed for commercial networking environments such as enterprise campuses, office buildings, ISP access networks, and data centers. The module supports 1.25Gbps Gigabit Ethernet transmission up to 80km over single-mode fiber and includes DOM diagnostics for convenient monitoring.

Does the module support DOM or DDM monitoring?

Yes. Digital Optical Monitoring is supported, allowing you to monitor transmit power, receive power, temperature, voltage, and laser bias current from supported switches.

Can I use this module over one fiber instead of two?

Yes. This is a BiDi optical transceiver that transmits at 1270nm and receives at 1330nm through a single LC simplex connection on single-mode fiber. It must be paired with the complementary 1330nm TX / 1270nm RX module.

Is this module compatible with Cisco Catalyst and other OEM switches?

Yes. It is designed for broad OEM compatibility and is commonly deployed in Cisco-compatible environments as well as many other major switch brands. Always verify your switch model and coding requirements before ordering.

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LINK-PP LS-BL27331G-80C 1G BiDi SFP 1270nm-TX/1330nm-RX 80km DOM LC SMF Optical Transceiver Module

Name: LINK-PP LS-BL27331G-80C 1G BiDi SFP 1270nm-TX/1330nm-RX 80km DOM LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 203924
Price: 16.856 USD
Availability: InStock
Rating: 4.9 (25 reviews)

# 203924

Product: LINK-PP LS-BL27331G-80C 1G BiDi SFP 1270nm-TX/1330nm-RX 80km DOM LC SMF Optical Transceiver Module
SKU: 203924
P/N: LS-BL27331G-80C
Price: $ 19.6
Stock: 850 in Stock
Sold: 2.2K
Product URL: https://www.l-p.com/products/493370.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-BL27331G-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-BL27331G-80C 1G BiDi SFP Specifications

The LINK-PP LS-BL27331G-80C is a high-reach, 1.25-Gbps BiDi SFP transceiver designed for efficient point-to-point connections via single-mode fiber. With a simplex LC interface, it utilizes transmit and receive wavelengths of 1270 and 1330 nanometers, respectively, to enable full-duplex communication on a single fiber with a link distance of up to 80 kilometers.

LINK-PP Part Number	LS-BL27331G-80C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1270nm-TX/1330nm-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 long-distance enterprise fiber links? By J***z on 2026-03-15

A: Yes. It's designed for commercial networking environments such as enterprise campuses, office buildings, ISP access networks, and data centers. The module supports 1.25Gbps Gigabit Ethernet transmission up to 80km over single-mode fiber and includes DOM diagnostics for convenient monitoring. By admin on 2026-03-16
Q: Does the module support DOM or DDM monitoring? By D***t on 2025-12-25

A: Yes. Digital Optical Monitoring is supported, allowing you to monitor transmit power, receive power, temperature, voltage, and laser bias current from supported switches. By admin on 2025-12-25
Q: Can I use this module over one fiber instead of two? By N***s on 2024-10-01

A: Yes. This is a BiDi optical transceiver that transmits at 1270nm and receives at 1330nm through a single LC simplex connection on single-mode fiber. It must be paired with the complementary 1330nm TX / 1270nm RX module. By admin on 2024-10-01
Q: Is this module compatible with Cisco Catalyst and other OEM switches? By P***n on 2024-03-09

A: Yes. It is designed for broad OEM compatibility and is commonly deployed in Cisco-compatible environments as well as many other major switch brands. Always verify your switch model and coding requirements before ordering. By admin on 2024-03-09

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Christopher White

Belgium

Verified Purchase

5 .0

2026-06-12

Installed into our enterprise edge switches for remote warehouse connectivity. Low optical attenuation, clean DOM statistics, and stable Gigabit Ethernet throughput throughout testing.

35 Helpful vote Comments

Elizabeth LastNames

New Zealand

Verified Purchase

5 .0

2026-04-19

We've now deployed more than sixty LS-BL27331G-80C modules across multiple customer sites, including outdoor cabinets, campus aggregation switches, and regional fiber distribution points. The 1270nm transmitter and 1330nm receiver combination integrated seamlessly with our existing BiDi infrastructure. During burn-in testing we monitored transmit power, receive power, module temperature, and supply voltage through DOM, and every module remained within specification. Compatibility testing covered Cisco Catalyst, Cisco IE industrial switches, MikroTik CRS series, and several unmanaged industrial Ethernet switches without EEPROM recognition issues. For organizations looking for a reliable 1G BiDi SFP 80km optical transceiver with single LC interface and single-mode fiber support, this module delivers consistent field performance while significantly reducing hardware costs.

12 Helpful vote Comments

Ryan Harris

Brazil

Verified Purchase

5 .0

2026-03-22

Great 1G BiDi SFP for long fiber runs.

34 Helpful vote Comments

Ashley Gonzalez

South Africa

Verified Purchase

5 .0

2026-02-22

Excellent value compared with branded optics.

76 Helpful vote Comments

Benjamin Morgan

Israel

Verified Purchase

5 .0

2026-01-13

Purchased twenty pieces for a data room upgrade. All units reported consistent DDM values, identical firmware behavior, and clean optical output. Batch quality was impressive.

28 Helpful vote Comments

John Campbell

Denmark

Verified Purchase

5 .0

2026-01-02

DOM readings are stable and accurate.

90 Helpful vote Comments

Chloe Lee

India

Verified Purchase

5 .0

2025-10-22

Running these in Cisco and MikroTik switches across our campus fiber network. Every module established the link immediately without firmware warnings. Perfect solution for long-distance single-mode fiber connections. :)

19 Helpful vote Comments

Larry Phillips

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-10-03

We replaced several expensive OEM 1000BASE-BX80 transceivers with this model. The 1270nm TX / 1330nm RX wavelength pair matched our existing deployment perfectly. DOM monitoring helped verify optical power after installation. Very happy with the purchase.

77 Helpful vote Comments

Brooke Adams

Israel

Verified Purchase

5 .0

2025-08-14

Works great for our remote security camera fiber network. Simple install and stable connection. ;)

7 Helpful vote Comments

Rebecca Taylor

Cambodia

Verified Purchase

5 .0

2025-07-08

Works perfectly over a single LC SMF strand.

83 Helpful vote Comments

Sean Murphy

Italy

Verified Purchase

5 .0

2025-05-25

We use this 1.25Gbps BiDi SFP for cellular base station backhaul. The 80km reach eliminated the need for additional repeaters on one route. Signal quality has remained excellent for months.

88 Helpful vote Comments

Andrew Moore

Republic of Korea

Verified Purchase

5 .0

2025-05-04

The temperature support was exactly what we needed.

32 Helpful vote Comments

Kenneth White

Brazil

Verified Purchase

5 .0

2025-02-24

Our ISP deployment required dependable 1000BASE-BX connectivity over approximately 76km of existing single-mode fiber. These modules paired correctly with the complementary wavelength unit, maintained stable receive power, and showed no CRC errors after continuous traffic testing. DOM information closely matched our optical test equipment, making acceptance testing much easier. The combination of temperature support, OEM compatibility, and competitive pricing makes this a practical alternative to original branded optics for carrier and enterprise networks.

43 Helpful vote Comments

George Lee

Belarus

Verified Purchase

5 .0

2025-02-19

Good packaging and anti-static protection. Installation took less than two minutes and the optical link came up immediately.

97 Helpful vote Comments

Madison Perez

Argentina

Verified Purchase

5 .0

2024-12-08

Passed every compatibility check we tried.

80 Helpful vote Comments

Megan Cook

Sweden

Verified Purchase

5 .0

2024-09-21

Nice option if you're searching for a Cisco compatible 1G BiDi SFP 80km module. It worked in Catalyst switches without any configuration changes.

39 Helpful vote Comments

Alexis Garcia

Maldives

Verified Purchase

5 .0

2024-09-17

Installed in an outdoor cabinet connected to a surveillance backbone. The operating temperature rating gave us confidence for year-round deployment. Link has remained stable during both hot afternoons and freezing nights.

73 Helpful vote Comments

Richard Garcia

Singapore

Verified Purchase

5 .0

2024-09-02

Fiber utilization was reduced by half since BiDi uses only one single-mode fiber. Saved us a considerable amount during a campus expansion project. :D

30 Helpful vote Comments

Christian Nelson

Israel

Verified Purchase

4 .0

2024-07-21

Box arrived slightly dented, but the module worked flawlessly.

10 Helpful vote Comments

John Young

United Arab Emirates

Verified Purchase

5 .0

2024-07-11

Reliable 80km optical transceiver module.

86 Helpful vote Comments

Brandon Wright

Philippines

Verified Purchase

4 .0

2024-06-28

Shipping was a little slower than expected, and one carton had a small scratch. Fortunately every transceiver passed testing, so performance wasn't affected.

25 Helpful vote Comments

Jonathan Allen

Brazil

Verified Purchase

5 .0

2024-05-18

We tested compatibility with several OEM platforms including Cisco, Ubiquiti and TP-Link. Every port recognized the module correctly. That's exactly what our purchasing team wanted.

86 Helpful vote Comments

Richard Lewis

Nepal

Verified Purchase

5 .0

2024-04-25

Using these for long-distance Ethernet links between factory buildings. The LC connector fits securely, optical power stays within specification, and remote DOM monitoring simplifies maintenance. Definitely ordering more. :)

12 Helpful vote Comments

Charles Lewis

New Zealand

Verified Purchase

5 .0

2024-03-27

Plugged in and linked up instantly. :)

34 Helpful vote Comments

Amelia Rogers

Russian Federation

Verified Purchase

5 .0