Can our field technicians hot-plug this module into an active core switch stack without generating interface errors or crashing the port?

Yes, the module features hot-swappable capability. You can slide the module in or pull it out via the metal bail latch without interrupting adjacent production traffic.

We are running a municipal traffic camera loop that requires legacy 155Mbps signaling over a 1km run. Will we experience packet loss?

No, the LS-MM8501-02C safely supports optical transmission distances up to 2km on multi-mode fiber. Your 1km run will have plenty of optical headroom to prevent packet drops.

Does this 850nm Duplex LC SFP optical transceiver require any specific polarization alignment on standard patch panels?

No, it follows standard cross-over Tx/Rx duplex LC layouts. Just make sure your patch cords are keyed correctly to prevent total loss of signal.

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LINK-PP LS-MM8501-02C 155M SFP 850nm 2km Duplex LC DDM MMF Optical Transceiver Module

Name: LINK-PP LS-MM8501-02C 155M SFP 850nm 2km Duplex LC DDM MMF Optical Transceiver Module
Brand: LINK-PP
SKU: 205696
Price: 4.902 USD
Availability: InStock
Rating: 4.9 (26 reviews)

# 205696

Product: LINK-PP LS-MM8501-02C 155M SFP 850nm 2km Duplex LC DDM MMF Optical Transceiver Module
SKU: 205696
P/N: LS-MM8501-02C
Price: $ 5.7
Stock: 190 in Stock
Sold: 2.8K
Product URL: https://www.l-p.com/products/494047.htm

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Manufacture: LINK-PP

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Compatible:: LINK-PP

Compatible P/N:: LS-MM8501-S5C | 550m; LS-MM8501-S5I | 550m; LS-MM3101-02C | 2km; LS-MM3101-02EI | 2km; LS-MM3101-02I | 2km; LS-MM8501-02C | 2km; LS-MM8501-02I | 2km

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LINK-PP LS-MM8501-02C 155M SFP Specifications

LS-MM8501-02C is a commercial-grade 155M multi-mode SFP optical transceiver operating at 850nm, supporting transmission distances up to 2km, with a VCSEL laser transmitter, PIN photodiode receiver, and an operating temperature range of 0 to 70°C, compliant with standard SFP electrical and optical interface specifications.

LINK-PP Part Number	LS-MM8501-02C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	850nm	Max Cable Distance	2km
Connector	Duplex LC	Media	MMF
Transmitter Type	VSCEL	Receiver Type	PIN
TX Power	-9 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	-23dBm	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	MSA Compliant

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Q: Can our field technicians hot-plug this module into an active core switch stack without generating interface errors or crashing the port? By E***h on 2026-05-12

A: Yes, the module features hot-swappable capability. You can slide the module in or pull it out via the metal bail latch without interrupting adjacent production traffic. By admin on 2026-05-13
Q: We are running a municipal traffic camera loop that requires legacy 155Mbps signaling over a 1km run. Will we experience packet loss? By R***k on 2025-10-23

A: No, the LS-MM8501-02C safely supports optical transmission distances up to 2km on multi-mode fiber. Your 1km run will have plenty of optical headroom to prevent packet drops. By admin on 2025-10-24
Q: Does this 850nm Duplex LC SFP optical transceiver require any specific polarization alignment on standard patch panels? By C***y on 2025-04-07

A: No, it follows standard cross-over Tx/Rx duplex LC layouts. Just make sure your patch cords are keyed correctly to prevent total loss of signal. By admin on 2025-04-08

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O***n

Denmark

Verified Purchase

5 .0

2026-05-14

We purchased 150 SFP modules for a large-scale network refresh and deployed them in a mix of access and distribution switches. Every module was plug-and-play, and the DOM feature allowed our NOC to proactively flag any weak receive levels. After 3 months, we’ve had zero failures, and the 155M links have maintained sub-millisecond latency. The 850nm wavelength works flawlessly with our multi-mode plant. This is a workhorse SFP that delivers exactly what it promises.

118 Helpful vote Comments

M***t

Belarus

Verified Purchase

5 .0

2026-05-07

Perfect for our 850nm backbone extension. Reliable.

50 Helpful vote Comments

C***n

Bulgaria

Verified Purchase

5 .0

2026-04-12

Replaced some old, failing transceivers with these. The difference is noticeable. Better optical power and more stable connection. The DOM feature helps us proactively monitor the health of our fiber links. Great upgrade for our campus network.

73 Helpful vote Comments

O***k

Brunei Darussalam

Verified Purchase

5 .0

2026-03-22

Easy setup, hot-swappable, works with our MMF cabling. Good deal.

68 Helpful vote Comments

S***x

France

Verified Purchase

5 .0

2026-03-09

We use these for a video surveillance backhaul where steady 155Mbps throughput is critical. The modules have run for two months without a single dropped frame, and the link quality remains stable day and night. The 850nm wavelength avoids interference from other equipment in the same rack, and the LC duplex connector provides secure polarity. Given the low power consumption, we can install them in high-density switches without worrying about heat buildup. This is a dependable, no-nonsense solution for fixed-speed fiber links.

135 Helpful vote Comments

T***s

Canada

Verified Purchase

5 .0

2026-02-18

We've been using these transceiver modules for our internal network for a few months. They've been running 24/7 without any problems. Good signal, stable performance. Great value for a commercial-grade 155M SFP transceiver module.

112 Helpful vote Comments

J***r

Spain

Verified Purchase

5 .0

2026-02-05

Works exactly as described for 2km multi-mode runs. No issues at all.

54 Helpful vote Comments

A***n

Australia

Verified Purchase

5 .0

2026-01-25

We were a bit skeptical because of the low price, but these LINK-PP SFP modules are legit. Used them for a 1.8km fiber run between buildings. Signal strength is good, and the LC connection is secure. Excellent for a commercial-grade transceiver.

97 Helpful vote Comments

B***y

Canada

Verified Purchase

4 .0

2026-01-03

Great product for the price, working well for our 155Mbps backbone. The process of shipping to Canada took a little longer than we expected. The product itself is a 5-star. The shipping is the only reason for the 4-star rating.

32 Helpful vote Comments

L***y

Spain

Verified Purchase

5 .0

2025-12-19

The VSCEL laser quality really stood out during our spectral analysis. The peak wavelength centered exactly at 850nm with minimal drift, and the output power stayed constant across multiple hot-insertion cycles. We also verified the SFF-8472 memory map, and all calibration coefficients were correct. This level of manufacturing consistency makes troubleshooting much easier when we have hundreds of these in the field. It’s a solid, well-engineered 155M SFP module.

91 Helpful vote Comments

A***t

Canada

Verified Purchase

5 .0

2025-12-03

Duplex LC connectors fit snug. Signal is clean. Happy with this buy.

85 Helpful vote Comments

A***e

Belgium

Verified Purchase

5 .0

2025-11-30

Used these for a temporary network setup for an event. They performed flawlessly for 3 days straight. The hot-pluggable feature made setup a breeze. Definitely keeping a few of these 850nm SFP modules in our inventory for future events.

104 Helpful vote Comments

I***l

Brazil

Verified Purchase

5 .0

2025-10-12

We ordered these SFP optical modules for a test lab and they passed with flying colors. Tested throughput, latency, and cable distance. Performed exactly to spec. Now we're ordering 300 more for a production deployment in our warehouse.

83 Helpful vote Comments

M***n

Indonesia

Verified Purchase

4 .0

2025-09-17

Functionally, it's a perfect 155M SFP module. Works with our switches just fine. The packaging was a little beat up when it arrived, but the transceiver was unharmed. Just a heads up for the logistics team.

19 Helpful vote Comments

R***t

Belgium

Verified Purchase

5 .0

2025-09-04

We deployed 20 of these 155M SFP modules in our data center for inter-rack connections. The 850nm VSCEL transceivers are performing well with our MMF cabling at 2km distances. DOM is accurate. Great value for the price.

146 Helpful vote Comments

R***n

Bulgaria

Verified Purchase

5 .0

2025-07-17

Using this 155M SFP module for a short 1.5km link. It's holding up great.

95 Helpful vote Comments

A***y

Hungary

Verified Purchase

4 .0

2025-07-01

Works great in our network, no technical complaints at all. The only minor issue was the shipping time. It arrived a few days later than the estimated delivery date. Might have been a customs thing, but still a bit frustrating.

25 Helpful vote Comments

E***n

Australia

Verified Purchase

5 .0

2025-06-30

Just what we needed for our legacy system. The 155M speed is perfect for these older devices, and the 850nm wavelength matches our existing multi-mode infrastructure. The price is unbeatable for this SFP MSA compliant module.

69 Helpful vote Comments

I***r

Belarus

Verified Purchase

5 .0

2025-05-22

The digital diagnostic monitoring (DOM) is a big plus for us. We can keep an eye on the TX power and RX power remotely. Very useful for a large network with many fiber links. Reliable SFP module!

79 Helpful vote Comments

T***t

Denmark

Verified Purchase

5 .0

2025-05-04

DOM works fine. Good budget transceiver option for 155M multi-mode fiber links.

87 Helpful vote Comments

G***n

Finland

Verified Purchase

5 .0

2025-04-20

We integrated these modules into our SNMP-based monitoring system, and the DOM data (temperature, voltage, bias current) polled perfectly every 5 minutes. This allowed us to trend the health of every 2km fiber link and pre-emptively identify dirty connectors. The modules never triggered a high-temperature alarm, even in densely packed chassis. For operations teams that rely on proactive maintenance, this transceiver is a perfect fit. The monitoring capabilities are as good as much more expensive optics.

120 Helpful vote Comments

F***l

Brazil

Verified Purchase

5 .0

2025-04-02

VSCEL laser seems stable. No packet loss observed during testing.

79 Helpful vote Comments

L***p

Brunei Darussalam

Verified Purchase

5 .0

2025-03-29

Using this 155M multi-mode SFP for a building-to-building link (about 1.2km). The 2km range gives us plenty of headroom. The module is recognized properly and reports accurate DDM values. Very satisfied with this cost-effective SFP transceiver.

101 Helpful vote Comments

S***n

Argentina

Verified Purchase

5 .0

2025-02-12

Bought a bunch for a warehouse network upgrade. The 2km range covers our entire facility. They were hot-swapped into our existing switches without a hitch. Good to have DOM support for monitoring signal health.

133 Helpful vote Comments

V***h

Germany

Verified Purchase

5 .0

2025-01-28

Deployed these 155M SFP modules across our campus to connect buildings over 1.8km of existing multi-mode fiber. The 850nm VSCEL laser provided a clean signal, and the DOM readings matched our optical power meter exactly. Over three months of continuous traffic, we saw zero CRC errors or link flaps. The modules ran cool even in our non-air-conditioned IDF closets. For a commercial-grade transceiver at this price, the performance is genuinely impressive.

147 Helpful vote Comments

M***t

Germany

Verified Purchase

5 .0

2025-01-16

Using these for a campus fiber link. Solid performance so far.

62 Helpful vote Comments