Will this 155M SFP BiDi module work in multi-vendor enterprise switches without configuration errors?

Yes, the module is fully compliant with standard multi-source agreements and is programmed for seamless compatibility with major multi-vendor networking hardware.

Can I use this 155M SFP transceiver over standard multi-mode fiber patching infrastructure?

No, this transceiver is strictly designed for single-mode fiber (SMF) infrastructure to achieve proper alignment and reach specifications.

How can we monitor if the module temperature is exceeding its safe operating limits?

You can utilize the integrated Digital Optical Monitoring (DOM) feature to read real-time module temperature metrics directly from your management console.

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LINK-PP LS-BL315501-20C 155M SFP BiDi 1310nm-TX/1550nm-RX 20km Simplex LC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-BL315501-20C 155M SFP BiDi 1310nm-TX/1550nm-RX 20km Simplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 181803
Price: 5.848 USD
Availability: InStock
Rating: 5 (43 reviews)

# 181803

Product: LINK-PP LS-BL315501-20C 155M SFP BiDi 1310nm-TX/1550nm-RX 20km Simplex LC DOM SMF Optical Transceiver Module
SKU: 181803
P/N: LS-BL315501-20C
Price: $ 6.8
Stock: 1400 in Stock
Sold: 1.6K
Product URL: https://www.l-p.com/products/476901.htm

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Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Brocade; D-Link; Extreme; Generic; Netgear

Compatible P/N:: LS-BL315501-10C | 10km; LS-BL315501-10I | 10km; LS-BL553101-10C | 10km; LS-BL553101-10I | 10km; LS-BL315501-15C | 15km; LS-BL553101-15C | 15km; LS-BL315501-20C | 20km; LS-BL315501-20I | 20km; LS-BL553101-20C | 20km; LS-BL553101-20I | 20km; LS-BL315501-40C | 40km; LS-BL315501-40I | 40km; LS-BL553101-40C | 40km; LS-BL553101-40I | 40km; LS-BL315501-80C | 80km; LS-BL315501-80I | 80km; LS-BL495501-80C | 80km; LS-BL495501-80I | 80km; LS-BL553101-80C | 80km; LS-BL553101-80I | 80km; LS-BL554901-80C | 80km; LS-BL554901-80I | 80km

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LINK-PP LS-BL315501-20C 155M SFP Specifications

LS-BL315501-20C operates as a commercial-grade 155M SFP BiDi single-mode optical transceiver module, pairing a 1310nm FP laser with a 1550nm PIN photo detector across a hot-pluggable architecture to sustain seamless single-strand bidirectional spans up to 20km.

LINK-PP Part Number	LS-BL315501-20C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1310nm-TX/1550nm-RX	Max Cable Distance	20km
Connector	Simplex 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	0 to 70°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Will this 155M SFP BiDi module work in multi-vendor enterprise switches without configuration errors? By E***e on 2026-03-15

A: Yes, the module is fully compliant with standard multi-source agreements and is programmed for seamless compatibility with major multi-vendor networking hardware. By admin on 2026-03-16
Q: Can I use this 155M SFP transceiver over standard multi-mode fiber patching infrastructure? By G***h on 2026-01-02

A: No, this transceiver is strictly designed for single-mode fiber (SMF) infrastructure to achieve proper alignment and reach specifications. By admin on 2026-01-03
Q: How can we monitor if the module temperature is exceeding its safe operating limits? By F***e on 2025-10-20

A: You can utilize the integrated Digital Optical Monitoring (DOM) feature to read real-time module temperature metrics directly from your management console. By admin on 2025-10-21

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Y***n

Netherlands

Verified Purchase

5 .0

2026-04-15

Perfect choice for Fast Ethernet infrastructure migrations. We needed a cost-efficient, standard-compliant solution for an older telecom sub-station upgrade requiring 155M optical transceivers. This module fits our technical criteria perfectly. The manufacturing build quality is excellent, with a precise mechanical casing that seats securely into standard SFP ports. In our testing lab, the optical spectrum analysis confirmed strict adherence to the specified wavelengths, and eye pattern testing demonstrated wide margins above standard thresholds. This ensures exceptional signal integrity over long-distance single-mode fiber topologies up to the 20km limit.

141 Helpful vote Comments

L***y

Italy

Verified Purchase

5 .0

2026-04-02

We deployed a dozen of these inside our main distribution frame. They handle the basic Fast Ethernet protocol transport perfectly. Good hardware stability for everyday enterprise operations. Let's see how they hold up long-term!

119 Helpful vote Comments

E***s

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2026-03-31

Real-world 15km link works great! We ran a line across our industrial site over single-mode fiber. Even with multiple patch panels creating slight attenuation, the 20km power margin leaves plenty of safety headroom. Clean links without packet loss.

66 Helpful vote Comments

W***d

Nepal

Verified Purchase

4 .0

2026-02-20

Arrived two days later than expected. The product specs match up perfectly with our single-mode fiber infrastructure, and the multi-vendor compatibility works as expected. The only downside was that local customs clearance delayed the delivery by two days, causing us to shift our maintenance schedule. Good thing the modules work fine.

129 Helpful vote Comments

H***t

Republic of Korea

Verified Purchase

5 .0

2026-02-04

The 1310nm/1550nm wavelength pair works efficiently over our standard SMF infrastructure. If you need to optimize fiber count on long-distance runs, this Simplex LC module is the way to go.

31 Helpful vote Comments

B***e

Maldives

Verified Purchase

5 .0

2026-01-11

We deployed these in our climate-controlled indoor data room for a legacy Fast Ethernet migration. Operating temperatures are staying well within the commercial 0-70°C threshold. Will buy more for the next phase.

67 Helpful vote Comments

G***d

Cambodia

Verified Purchase

5 .0

2025-12-25

Excellent attenuation margins for distributed access networks. We deployed these 155M Simplex LC modules on a 17.5km single-mode fiber link connecting our central data center to a remote access node. Given the distance, we were closely monitoring the optical power budget and attenuation margins. The transmitter launched a very clean signal at 1310nm, and the receiver sensitivity at 1550nm allowed for a comfortable safety headroom even with multiple fusion splices along the path. The links have remained perfectly stable for weeks without a single Bit Error Rate spike.

123 Helpful vote Comments

X***w

Norway

Verified Purchase

5 .0

2025-12-04

Best value for campus networking. Simplex LC interface saves a ton of fiber patching space.

47 Helpful vote Comments

A***d

Mexico

Verified Purchase

5 .0

2025-11-07

Great DOM monitoring feature! Having integrated Digital Optical Monitoring at this price point is amazing. We can track real-time transceiver temperature and optical power directly from our remote network management center. Very satisfied with the deployment!

48 Helpful vote Comments

J***y

Italy

Verified Purchase

4 .0

2025-10-31

Excellent compatibility, slower than expected shipping. Deployed these on a multi-vendor edge network and they synced immediately—no firmware issues at all. The hardware seems very robust for indoor use. However, standard shipping to our EU facility took longer than stated on the site. Good product, but plan ahead for delivery delays.

49 Helpful vote Comments

V***d

United States

Verified Purchase

5 .0

2025-10-15

Reliable 155M BiDi SFP sourcing. The batch passed all initial hardware validation tests with zero errors. (^_^)

16 Helpful vote Comments

D***d

Morocco

Verified Purchase

5 .0

2025-09-17

Robust real-time telemetry and diagnostic capabilities. As a network operations manager, having active DOM/DDM telemetry on our fiber links is non-negotiable. This transceiver provides highly accurate diagnostic monitoring data. We can track transmitter bias current, internal module temperature, and supply voltage directly through our standard network operating system interface. This visibility is vital for proactive maintenance and identifying fiber attenuation degradation before it causes a hard link downtime event. The commercial temperature handling is completely adequate for our indoor rack deployments. (^_^)

136 Helpful vote Comments

Z***r

Malaysia

Verified Purchase

5 .0

2025-08-22

Saved our fiber layout budget! Using the Simplex LC setup allowed us to cut our physical fiber utilization in half for the campus uplink. The 1310nm-TX and 1550nm-RX channel alignment is rock solid over our 16km single-mode run.

59 Helpful vote Comments

U***d

Bangladesh

Verified Purchase

5 .0

2025-07-29

Our engineering department deployed 20 units of this 155M SFP BiDi 20km module across our regional campus network infrastructure. The primary objective was to optimize our existing single-mode fiber plant. By utilizing the Simplex LC architecture with alternating 1310nm-TX and 1550nm-RX wavelengths, we successfully doubled our link capacity without laying new cables. Digital Optical Monitoring (DOM) telemetry is fully accessible via our SNMP monitoring platform, providing real-time data on receiver power levels and internal operating temperatures. The units have maintained stable links with zero frame losses under heavy traffic validation.

92 Helpful vote Comments

I***l

United Kingdom

Verified Purchase

5 .0

2025-07-08

Fully compliant with multi-source agreement standards. Our engineering team checked the firmware synchronization and found the register values perfectly aligned with standard SFP requirements.

14 Helpful vote Comments

F***k

Lithuania

Verified Purchase

5 .0

2025-06-19

We are using these for a dedicated low-bandwidth telemetry link between buildings. The 155M line rate holds perfectly stable under continuous traffic testing. No interface flapping noticed.

51 Helpful vote Comments

C***e

Macao

Verified Purchase

5 .0

2025-05-26

Needed some reliable 155M transceivers for our distributed multi-point network layout. These optical modules paired instantly without any software recognition errors or interface lockouts. Clear data streams all day.

33 Helpful vote Comments

K***n

Japan

Verified Purchase

5 .0

2025-04-23

No issues at all. Clean TX 1310nm / RX 1550nm signaling across the entire rack segment.

35 Helpful vote Comments

M***y

Lithuania

Verified Purchase

5 .0

2024-06-29

Checkout and selection views of products was very good.

33 Helpful vote Comments

K***g

Canada

Verified Purchase

5 .0

2024-05-07

I recommend it, very Fast and cheap

47 Helpful vote Comments

M***n

Canada

Verified Purchase

5 .0

2024-03-12

Competitive prices. Site is easy to use. Fast shipping.

51 Helpful vote Comments

M***s

United States

Verified Purchase

5 .0

2024-02-16

I got my order very quickly and was pleasantly surprised to see great quality of the item. It exceeded my expectations!

9 Helpful vote Comments

i***d

Israel

Verified Purchase

5 .0

2024-01-23

We have been with l-p.com for about 3 years. Our experience has always been positive. Their sales have always been able to help when we needed it. I highly recommend this site.

82 Helpful vote Comments

Y***o

Mexico

Verified Purchase

5 .0

2024-01-22

It is exactly what it says it is...perfect for diverting.

56 Helpful vote Comments

M***n

Canada

Verified Purchase

5 .0

2024-01-04

I purchased these 10/25/40G Transceiver Modules and Lan Transformer because they were less expensive than I found in other places, and order came Fast and quick. Thank You

42 Helpful vote Comments

M***s

Poland

Verified Purchase

5 .0

2024-01-01

Would definitely recommend them to my friends and family for their excellent service and good 10/25/40G Transceiver Modules.

99 Helpful vote Comments

D***n

Philippines

Verified Purchase

5 .0

2023-10-17

My order of lan transformer arrived on time. Now they work fine with my Smart Meters.

83 Helpful vote Comments

J***p

Brunei Darussalam

Verified Purchase

5 .0

2023-10-14

Excelente servicio, muy rápido, productos excelentes de alto desempeño

27 Helpful vote Comments

S***a

United Arab Emirates

Verified Purchase

5 .0

2023-10-10

Great price, outstanding service.

82 Helpful vote Comments

S***s

Taiwan, Province of China

Verified Purchase

5 .0

2023-09-13

Placed a few orders over the years with Link-PP. Their customers service have been brilliant and very helpful in the past and I always found the prices very competitive.

36 Helpful vote Comments

D***g

United States

Verified Purchase

5 .0

2023-09-06

I really like find such good pricing and ready shipping options.

109 Helpful vote Comments

Y***n

United States

Verified Purchase

5 .0

2023-08-29

Order arrived undamaged and in expected time frame. Perfectly done, thanks."

48 Helpful vote Comments

J***r

Malaysia

Verified Purchase

5 .0

2023-07-28

The items arrived sooner than expected and I'm very happy with the transaction.

65 Helpful vote Comments

D***s

Netherlands

Verified Purchase

5 .0

2023-07-12

Their price was significantly lower than the competition. Nice! And accurate communication and delivery was good.

111 Helpful vote Comments

G***n

Ireland

Verified Purchase

5 .0

2023-06-23

Cooperate with LINK-PP for a long time, it is helpful to most of our project. Nice partner which provides the good service and products.

94 Helpful vote Comments

M***e

Denmark

Verified Purchase

5 .0

2023-06-18

Good seller. Got it Fast. Would recommend to others.

63 Helpful vote Comments

J***m

United Arab Emirates

Verified Purchase

5 .0

2023-06-01

Been looking for it for months! Only wholesalers with 1000x bunches available. Thank you for your help to all hobbyists! You need better adverts though, it's really difficult to find you on the internet.

94 Helpful vote Comments

E***l

Netherlands

Verified Purchase

5 .0

2023-04-18

nice and smooth

16 Helpful vote Comments

J***d

Libyan Arab Jamahiriya

Verified Purchase

5 .0