A lot of low-cost SFP modules have sloppy physical tolerances, making them loose or hard to eject from high-density patch panels. How is your physical molding?

Every single module is precision-molded to the exact millimeter dimensions specified by the SFP Multi-Source Agreement. This guarantees a clean, smooth click-in and an effortless latch release.

My field tech accidentally left the fiber patch unplugged in a dusty tunnel for a week. Can I just alcohol-wipe this SFP port, or is the internal glass lens ruined?

The internal glass lens is hermetically sealed, so it won't be ruined. Just blow it out with compressed air and use a standard click-cleaner on the LC duplex interface before inserting the fiber.

Our fiber run is exactly 9.8km, which is cutting it close to your 10km maximum upper limit. Is it risky to deploy this without moving up to a 20km module?

If your fiber is clean, it will work, but to be safe we recommend a more conservative approach. Check your total link loss with an OTDR first; if your attenuation margin is tight, stepping up to a 20km SFP module is the safer bet.

We are dealing with old, poorly mapped campus single-mode fiber with heavy attenuation. Will the DOM accurately reflect the true RX power, or does it glitch out at high loss levels?

The internal micro-controller provides linear DOM tracking all the way down to the receiver's minimum sensitivity limit (-32dBm). This gives you highly reliable RSSI metrics directly in your CLI to accurately isolate dirty splices.

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LINK-PP LS-SM3101-10I 155M SFP 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-SM3101-10I 155M SFP 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 181589
Price: 5.212 USD
Availability: InStock
Rating: 4.9 (35 reviews)

# 181589

Product: LINK-PP LS-SM3101-10I 155M SFP 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module (Industrial)
SKU: 181589
P/N: LS-SM3101-10I
Price: $ 6.06
Stock: 1620 in Stock
Sold: 1.4K
Product URL: https://www.l-p.com/products/476738.htm

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

For Order Over $3000 Get $50.00 Off , Code: Linkpp50

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Manufacture: LINK-PP

P/N: LS-SM3101-10I

Compatible:: Cisco; LINK-PP; H3C

Compatible P/N:: LS-SM3101-10C | 10km; LS-SM3101-10I | 10km; LS-SM3101-15C | 15km; LS-SM3101-20C | 20km; LS-SM3101-20I | 20km; LS-SM3101-40C | 40km; LS-SM3101-40I | 40km; LS-SM5501-80C | 80km; LS-SM5501-80I | 80km; LS-SM5501-A2C | 120km; LS-SM5501-A2I | 120km

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LINK-PP LS-SM3101-10I 155M SFP Specifications

LS-SM3101-10I SFP transceiver module delivers robust 155Mbps optical connectivity across 10km of single-mode infrastructure at 1310nm, combining an industrial-hardened -40°C to +85°C thermal threshold with real-time digital diagnostic telemetry for precise module monitoring.

LINK-PP Part Number	LS-SM3101-10I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1310nm	Max Cable Distance	10km
Connector	Duplex LC	Media	SMF
Transmitter Type	FP	Receiver Type	PIN
TX Power	-14 to -8dBm	RX Power	-32 to -6dBm
Receiver Sensitivity	-32dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	IEEE802.3ab, GR-468, MSA Compliant

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Q: A lot of low-cost SFP modules have sloppy physical tolerances, making them loose or hard to eject from high-density patch panels. How is your physical molding? By F***n on 2026-03-19

A: Every single module is precision-molded to the exact millimeter dimensions specified by the SFP Multi-Source Agreement. This guarantees a clean, smooth click-in and an effortless latch release. By admin on 2026-03-20
Q: My field tech accidentally left the fiber patch unplugged in a dusty tunnel for a week. Can I just alcohol-wipe this SFP port, or is the internal glass lens ruined? By D***k on 2026-01-05

A: The internal glass lens is hermetically sealed, so it won't be ruined. Just blow it out with compressed air and use a standard click-cleaner on the LC duplex interface before inserting the fiber. By admin on 2026-01-06
Q: Our fiber run is exactly 9.8km, which is cutting it close to your 10km maximum upper limit. Is it risky to deploy this without moving up to a 20km module? By E***e on 2025-06-27

A: If your fiber is clean, it will work, but to be safe we recommend a more conservative approach. Check your total link loss with an OTDR first; if your attenuation margin is tight, stepping up to a 20km SFP module is the safer bet. By admin on 2025-06-28
Q: We are dealing with old, poorly mapped campus single-mode fiber with heavy attenuation. Will the DOM accurately reflect the true RX power, or does it glitch out at high loss levels? By C***d on 2025-04-12

A: The internal micro-controller provides linear DOM tracking all the way down to the receiver's minimum sensitivity limit (-32dBm). This gives you highly reliable RSSI metrics directly in your CLI to accurately isolate dirty splices. By admin on 2025-04-13

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J***d

Canada

Verified Purchase

5 .0

2026-04-01

Needed industrial-grade transceivers for a roadside traffic control box that fluctuates wildly in temperature between day and night. These modules haven't dropped a single packet since installation three months ago. Reliable hardware!

50 Helpful vote Comments

M***x

United Kingdom

Verified Purchase

5 .0

2026-03-17

Upgraded our outdoor enclosure nodes with these wide-temperature SFP modules. Running smoothly at 1310nm over a 7km single-mode fiber run. The DOM telemetry gives clean power metrics directly in the switch CLI. Buying more for the next phase!

78 Helpful vote Comments

D***r

France

Verified Purchase

5 .0

2026-02-19

Ordered a bunch of these 155M SFP modules for a rural telecom backhaul project. Hooked them up to SMF patch cords. The optical power budget is generous, keeping the link stable over long runs. Highly recommended.

31 Helpful vote Comments

M***n

Republic of Korea

Verified Purchase

5 .0

2026-02-07

An excellent choice for anyone building or maintaining industrial fiber networks. The LS-SM3101-10I SFP transceiver offers the perfect balance of robust construction, strict protocol compliance, and affordable pricing. We tested it extensively under high-load Fast Ethernet traffic over single-mode fiber. The 1310nm laser maintains stable power output under varying input voltages, and the DOM diagnostics provide precise monitoring data via the switch operating system. We noticed no frame loss or latency spikes during our 72-hour stress testing loop.

123 Helpful vote Comments

M***e

Russian Federation

Verified Purchase

4 .0

2026-02-03

Box arrived bruised, optics untouched. Good price for an industrial wide-temperature transceiver. The duplex LC ports are tight and links are stable over singlemode fiber. The outer shipping box arrived slightly dented, but the optics inside were perfectly safe.

19 Helpful vote Comments

C***n

Brazil

Verified Purchase

5 .0

2026-01-28

If you're looking for a dependable, cost-effective 155M 1310nm 10km SFP module with full DOM functionality, this is it. We integrated these into our railway signaling network where reliability means safety. The transceivers communicate perfectly with our specialized edge routers over duplex single-mode fiber lines. Optical power budgets are well-designed, ensuring clean transmissions even through multiple patch frames. The real-time DOM diagnostics have been tested against our optical time-domain reflectometer (OTDR) logs and found to be highly accurate. The metal housing provides excellent heat dissipation and EMI shielding, which is critical in traction power environments. Very satisfied with the build quality and performance metrics.

98 Helpful vote Comments

J***n

Germany

Verified Purchase

5 .0

2026-01-03

Fast shipping to Germany and the DOM readings are spot on.

17 Helpful vote Comments

D***e

Mexico

Verified Purchase

5 .0

2025-12-11

Perfect transceiver for our legacy telecom migration project. We had to connect several older 155M optical ports to a modern fiber patch panel across an industrial complex. These 155M SFP 1310nm transceivers worked flawlessly right out of the box. They are fully compliant with standard SFP multi-source agreements (MSA), so they play nice with our network switches. The duplex LC connector locks perfectly, and the single-mode fiber support easily covers the 10km distance across the campus. Having DOM built-in allows us to easily track down dirty fiber patches without disconnecting the line. Excellent cost savings for anyone trying to maintain or extend legacy industrial networks.

145 Helpful vote Comments

R***r

United States

Verified Purchase

5 .0

2025-11-22

Cheap, reliable, and handles the summer heat in Texas like a boss.

35 Helpful vote Comments

T***y

Australia

Verified Purchase

5 .0

2025-10-15

Great value 155M single-mode SFP module. The DOM support works natively on our fiber switches, tracking both TX and RX power accurately. No weird firmware crashes or link flapping during soft reboots.

23 Helpful vote Comments

J***n

Canada

Verified Purchase

5 .0

2025-09-12

Works flawlessly on our industrial switch, plug and play!

26 Helpful vote Comments

C***n

India

Verified Purchase

5 .0

2025-08-04

We deployed these 155M 1310nm SFP modules in our municipal smart-city IoT gateway network. The gateways are housed in outdoor uncooled enclosures across the city, so standard commercial grade optics are completely out of the question. The industrial-grade design of the LS-SM3101-10I handles the harsh environment easily. The single-mode fiber connection reaches our central hub 9km away without needing any intermediate repeaters. DOM telemetry allows us to monitor the laser health and received power levels constantly. This proactive monitoring has drastically reduced field truck rolls. The compatibility with our industrial-grade media converters was immediate, showing no firmware rejection errors. Exceptional product engineering from LINK-PP.

106 Helpful vote Comments

W***n

Germany

Verified Purchase

5 .0

2025-07-05

Standard Fast Ethernet transceivers are getting hard to find at a reasonable price. LINK-PP nailed it with these 10km SFP modules. Deployed 20 of them across our electrical substation automation network. Duplex LC clicked in tight.

41 Helpful vote Comments

R***t

Japan

Verified Purchase

5 .0

2025-06-28

Using these modules for our enterprise security camera mesh network. The 10km range is perfect for covering the outer perimeter of the logistics park. Duplex LC fiber lines connected effortlessly, packet latency is non-existent. Great budget saver.

67 Helpful vote Comments

A***n

Turkey

Verified Purchase

4 .0

2025-05-19

Transit took a bit longer, but hardware is solid. Solid 1310nm 10km SFP modules for our industrial switches. Performance is definitely 5-star, but shipping to our warehouse took a couple of days longer than expected due to weather delays. Will order earlier next time.

23 Helpful vote Comments

S***o

Spain

Verified Purchase

5 .0

2024-06-07

very responsive, competitive, and reliable.

37 Helpful vote Comments

T***a

United States

Verified Purchase

5 .0

2024-04-21

Everything came as expected and on time.

65 Helpful vote Comments

F***e

Thailand

Verified Purchase

5 .0

2024-04-09

Good selection of new parts at excellent prices.

48 Helpful vote Comments

S***s

France

Verified Purchase

5 .0

2024-01-14

Not only did this company have Juniper transceivers with incredible prices for us to choose from, but the customer service and the Optical Transceiver Module quality were very outstanding. I couldn't be more satisfied with our overall experience.

28 Helpful vote Comments

B***o

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2024-01-11

Truly a quality product. If I need more, I will definitely come back.

52 Helpful vote Comments

A***L

United States

Verified Purchase

5 .0

2023-12-27

Plug and play. Installed very easily and quickly. Item exactly as described. Would buy again if/when the need arises again for this hardware.

148 Helpful vote Comments

R***y

India

Verified Purchase

5 .0

2023-11-25

Even when products fail, they handle the problems with a "The customer is always right" attitude. Professional online sales!

20 Helpful vote Comments

P***s

New Zealand

Verified Purchase

5 .0

2023-10-05

Part arrived within 15 days and was exactly as described. I was very satisfied.

131 Helpful vote Comments

S***m

United States

Verified Purchase

5 .0

2023-09-15

Items were always well packaged.

27 Helpful vote Comments

K***m

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2023-09-01

We just tested some 10G Optical Transceiver Modules this afternnon, all are with good performance and give you 5 star. ohh Hope to work with you soon.

105 Helpful vote Comments

M***e

Nepal

Verified Purchase

5 .0

2023-08-27

Truly a quality product. If I need more, I will definitely come back.

49 Helpful vote Comments

P***i

United States

Verified Purchase

5 .0

2023-08-15

Have ordered a lot from Link-pp - NEVER had a problem...

96 Helpful vote Comments

E***u

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2023-08-05

I have already received the parcel, packing looks good and all work well. So amazing.

55 Helpful vote Comments

T***h

United States

Verified Purchase

5 .0

2023-07-29

have been very satisfied with the quality of goods purchased

76 Helpful vote Comments

K***e

Hong Kong

Verified Purchase

5 .0

2023-06-02

Putting in the order was super easy and shipping was really quick.

99 Helpful vote Comments

W***i

Maldives

Verified Purchase

5 .0

2023-03-30

The 1x1 Port SFP Cage was amazing, and the customer service was awesome and very responsive. I would highly recommend them.

59 Helpful vote Comments

J***o

Russian Federation

Verified Purchase

5 .0

2023-03-24

Need 4pcs Integrated SFP+ Cages in our repairs. So we went to l-p.com for some help , link-pp replaced it perfectly and support small quantity . We are quite satisfied.

31 Helpful vote Comments

R***y

Maldives

Verified Purchase

5 .0

2023-02-23

So far I love them, easy order system, they tell you how many are in stock right on the site.

108 Helpful vote Comments

C***n

United States

Verified Purchase

5 .0