Just to confirm before I buy, does this use a Simplex SC connector, and is it compatible with standard single-mode fiber?

Spot on! This module features a Simplex SC optical interface and is fully compatible with standard 9/125碌m Single-Mode Fiber (SMF). Just remember to pair it with a complementary 1550nm-TX/1310nm-RX module on the other end of the 20km link to establish a successful connection!

Do these transceivers meet 1000BASE-BX standards and support real-time monitoring for our intelligent transportation network?

Yes! The module strictly adheres to 1000BASE-BX protocols and IEEE 802.3z standards. It also features built-in DOM/DDM capabilities compliant with SFF-8472, allowing your sysadmins to monitor optical TX/RX power, voltage, and temperature in real-time.

Hi there, I need to mix these with Cisco and Aruba switches in our campus network. Does this LS-SC31551G-20I have any OEM compatibility issues, or is it strictly plug-and-play?

The LS-SC31551G-20I is 100% MSA compliant and offers seamless OEM compatibility. It is rigorously tested for plug-and-play interoperability with Cisco, Aruba, Ubiquiti, Juniper, and other major brands, ensuring hassle-free integration into your existing fiber infrastructure.

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LINK-PP LS-SC31551G-20I 1G SFP BiDi 1310nm-TX/1550nm-RX 20km Simplex SC DOM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-SC31551G-20I 1G SFP BiDi 1310nm-TX/1550nm-RX 20km Simplex SC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 202193
Price: 13.33 USD
Availability: InStock
Rating: 5 (22 reviews)

# 202193

Product: LINK-PP LS-SC31551G-20I 1G SFP BiDi 1310nm-TX/1550nm-RX 20km Simplex SC DOM SMF Optical Transceiver Module (Industrial)
SKU: 202193
P/N: LS-SC31551G-20I
Price: $ 15.5
Stock: 90 in Stock
Sold: 810
Product URL: https://www.l-p.com/products/491672.htm

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

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Manufacture: LINK-PP

P/N: LS-SC31551G-20I

Compatible:: LINK-PP

Compatible P/N:: LS-SC31551G-03C | 3km; LS-SC31551G-03I | 3km; LS-SC55311G-03C | 3km; LS-SC55311G-03I | 3km; LS-SC31491G-10C | 10km; LS-SC31551G-10C | 10km; LS-SC31551G-10I | 10km; LS-SC49311G-10C | 10km; LS-SC55311G-10C | 10km; LS-SC55311G-10I | 10km; LS-SC31491G-20C | 20km; LS-SC31551G-20C | 20km; LS-SC31551G-20I | 20km; LS-SC49311G-20C | 20km; LS-SC55311G-20C | 20km; LS-SC55311G-20I | 20km; LS-SC31551G-40C | 40km; LS-SC31551G-40I | 40km; LS-SC55311G-40C | 40km; LS-SC55311G-40I | 40km

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LINK-PP LS-SC31551G-20I 1G BiDi SFP Specifications

The LINK-PP LS-SC31551G-20I is an industrial grade optical transceiver designed for robust Gigabit Ethernet applications. Complying with 1000BASE-BX standards, this 1G BiDi SFP module delivers exceptional reliability in harsh environments. It operates seamlessly across extreme temperatures from -40°C to 85°C, making it an ideal choice for challenging networking deployments.

LINK-PP Part Number	LS-SC31551G-20I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1310nm-TX/1550nm-RX	Max Cable Distance	20km
Connector	Simplex SC	Media	SMF
Transmitter Type	FP	Receiver Type	PIN
TX Power	-9 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	-23dBm	Receiver Overload	-3dBm
DOM Support	Yes	Operating Temperature Range	-40 to 85°C

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Q: Just to confirm before I buy, does this use a Simplex SC connector, and is it compatible with standard single-mode fiber? By M***n on 2026-06-07

A: Spot on! This module features a Simplex SC optical interface and is fully compatible with standard 9/125碌m Single-Mode Fiber (SMF). Just remember to pair it with a complementary 1550nm-TX/1310nm-RX module on the other end of the 20km link to establish a successful connection! By admin on 2026-06-07
Q: Do these transceivers meet 1000BASE-BX standards and support real-time monitoring for our intelligent transportation network? By J***s on 2026-04-12

A: Yes! The module strictly adheres to 1000BASE-BX protocols and IEEE 802.3z standards. It also features built-in DOM/DDM capabilities compliant with SFF-8472, allowing your sysadmins to monitor optical TX/RX power, voltage, and temperature in real-time. By admin on 2026-04-12
Q: Hi there, I need to mix these with Cisco and Aruba switches in our campus network. Does this LS-SC31551G-20I have any OEM compatibility issues, or is it strictly plug-and-play? By A***s on 2026-03-17

A: Hi! The LS-SC31551G-20I is 100% MSA compliant and offers seamless OEM compatibility. It is rigorously tested for plug-and-play interoperability with Cisco, Aruba, Ubiquiti, Juniper, and other major brands, ensuring hassle-free integration into your existing fiber infrastructure. By admin on 2026-03-17

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B***g

Belgium

Verified Purchase

5 .0

2026-05-02

Flawless 1G SFP! DOM works perfectly.

72 Helpful vote Comments

M***e

Sweden

Verified Purchase

5 .0

2026-04-09

Excellent 1000BASE-BX compliance with zero packet loss.

77 Helpful vote Comments

E***g

Switzerland

Verified Purchase

5 .0

2026-04-04

We deploy these LS-SC31551G-20I modules in unconditioned outdoor NEMA enclosures. Even enduring brutal -40°C winters and summer bakes, the 20km SMF links stay rock solid for our base station backhaul.

137 Helpful vote Comments

A***h

Malaysia

Verified Purchase

5 .0

2026-03-11

Works great for our base station backhaul.

174 Helpful vote Comments

J***s

Spain

Verified Purchase

5 .0

2026-02-25

Deployed these for outdoor cabinets in extreme heat. The 85°C rating is completely legit!

152 Helpful vote Comments

R***s

Netherlands

Verified Purchase

5 .0

2026-02-08

Cheap, reliable 20km transmission. Highly recommended!

186 Helpful vote Comments

N***a

United States

Verified Purchase

5 .0

2025-12-07

Plug and play on my Cisco switches.

204 Helpful vote Comments

L***r

Greece

Verified Purchase

5 .0

2025-11-14

Bulk ordered 50 units for a massive machine room upgrade. The single-strand Simplex SC design saved us a fortune on fiber cabling. DDM stats are incredibly stable under heavy 1.25Gbps loads.

128 Helpful vote Comments

R***z

Switzerland

Verified Purchase

5 .0

2025-10-28

Perfect 1310nm-TX BiDi for data center interconnect.

135 Helpful vote Comments

J***n

Colombia

Verified Purchase

4 .0

2025-10-17

Delivery took a day longer than expected, but the 1G BiDi SFP works flawlessly in outdoor cabinets.

21 Helpful vote Comments

K***k

United States

Verified Purchase

5 .0

2025-10-15

The Simplex SC interface makes cabling so much easier in our tight rack spaces.

91 Helpful vote Comments

N***z

Brazil

Verified Purchase

5 .0

2025-09-28

Survives -40°C. Great industrial 1G SFP! ❄️

52 Helpful vote Comments

J***l

United Kingdom

Verified Purchase

5 .0

2025-09-15

Best budget 1G BiDi for home NAS!

179 Helpful vote Comments

L***z

Ukraine

Verified Purchase

5 .0

2025-09-04

Great for connecting my home NAS to the garage over a single fiber strand!

159 Helpful vote Comments

P***r

Republic of Korea

Verified Purchase

5 .0

2025-08-17

Simplex SC connector clicked right in easily!

183 Helpful vote Comments

L***z

Chile

Verified Purchase

5 .0

2025-08-17

Ran extensive compatibility tests across Cisco, Ubiquiti, and Mikrotik gear. This 1G BiDi SFP (1310nm-TX/1550nm-RX) recognized instantly with full DOM support. Perfect for our new campus fiber ring topology!

169 Helpful vote Comments

B***e

Russian Federation

Verified Purchase

5 .0

2025-08-14

Accurate DDM monitoring. Will definitely buy again.

60 Helpful vote Comments

L***n

Costa Rica

Verified Purchase

5 .0

2025-08-04

Excellent OEM compatibility! Tested this 1310nm/1550nm BiDi on both Juniper and Aruba switches perfectly.

126 Helpful vote Comments

M***k

Viet Nam

Verified Purchase

5 .0

2025-06-25

Used for batch deployment in our data center interconnect. Very cost-effective 1G SFP module.

180 Helpful vote Comments

P***n

Japan

Verified Purchase

5 .0

2025-03-31

DDM readings match our Fluke tests. Outstanding quality for an industrial wide-temp optical module.

195 Helpful vote Comments

J***r

Indonesia

Verified Purchase

5 .0

2025-02-26

Replaced failing OEM optics with these industrial LINK-PP transceivers for our intelligent transportation system. 1000BASE-BX compliance is spot on, ensuring zero downtime for our critical traffic monitoring nodes.

37 Helpful vote Comments

T***e

Italy

Verified Purchase

5 .0

2025-02-25

Solid industrial transceiver for campus fiber networks.

167 Helpful vote Comments