Can this 1270nm CWDM SFP+ module work in a Cisco switch with an existing 40km single-mode fiber link?

Yes, the product page lists Cisco compatibility, and the module is designed as a 10G SFP+ CWDM optic with a 1270nm wavelength, Duplex LC interface and SMF support up to 40km. For a production deployment, we would still recommend confirming the exact Cisco switch model and required CWDM channel before ordering.

We are putting optics in outdoor cabinets. Does the industrial version actually support wide temperature conditions, and can we monitor the optic remotely?

Yes. The specified operating case temperature is -40 to +85°C. The module also supports real-time digital diagnostic monitoring, including temperature, supply voltage, bias current, TX optical power and RX optical power, which is useful for remote NOC monitoring and field maintenance.

Does the module support standard 10G applications, or is it only intended for CWDM networks?

It is designed for 10G CWDM optical systems and also lists 10GBASE-ZR at 10.3125Gbps, 10GBASE-ZW at 9.953Gbps and LTE systems among its applications. The module supports up to 10.7Gbps, uses a hot-pluggable SFP+ footprint and complies with SFP+ MSA and SFF-8472.

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LINK-PP LS-CW2710-40I 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-CW2710-40I 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 188261
Price: 176.3 USD
Availability: InStock
Rating: 5 (45 reviews)

# 188261

Product: LINK-PP LS-CW2710-40I 10G SFP+ CWDM 1270nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
SKU: 188261
P/N: LS-CW2710-40I
Price: $ 205
Stock: 1100 in Stock
Sold: 1.9K
Product URL: https://www.l-p.com/products/482843.htm

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Manufacture: LINK-PP

P/N: LS-CW2710-40I

Compatible:: Cisco; LINK-PP; Brocade; Ciena; Dell; Generic; H3C; HPE; Juniper

Wavelength:: 1270nm; 1290nm; 1310nm; 1330nm; 1350nm; 1370nm; 1390nm; 1410nm; 1430nm; 1450nm; 1470nm; 1490nm; 1510nm; 1530nm; 1550nm; 1570nm; 1590nm; 1610nm

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LINK-PP LS-CW2710-40I 10G SFP+ Specifications

The LINK-PP LS-CW2710-40I 10G SFP+ optical transceiver module supports data rates of up to 10.7Gbps over single-mode fiber (SMF) and has a transmission range of up to 40km at a wavelength of 1270nm.

LINK-PP Part Number	LS-CW2710-40I	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1270nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN
TX Power	-1 to +5dBm	RX Power	-23 to -6dBm
Receiver Sensitivity	<-16dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	SFP+ MSA, CPRI, eCPRI, SFF-8431, SFF-8472, RoHS, ITU-T G.652

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Q: Can this 1270nm CWDM SFP+ module work in a Cisco switch with an existing 40km single-mode fiber link? By J***s on 2026-06-15

A: Yes, the product page lists Cisco compatibility, and the module is designed as a 10G SFP+ CWDM optic with a 1270nm wavelength, Duplex LC interface and SMF support up to 40km. For a production deployment, we would still recommend confirming the exact Cisco switch model and required CWDM channel before ordering. By admin on 2026-06-16
Q: We are putting optics in outdoor cabinets. Does the industrial version actually support wide temperature conditions, and can we monitor the optic remotely? By J***s on 2025-07-28

A: Yes. The specified operating case temperature is -40 to +85°C. The module also supports real-time digital diagnostic monitoring, including temperature, supply voltage, bias current, TX optical power and RX optical power, which is useful for remote NOC monitoring and field maintenance. By admin on 2025-07-28
Q: Does the module support standard 10G applications, or is it only intended for CWDM networks? By I***n on 2025-05-17

A: It is designed for 10G CWDM optical systems and also lists 10GBASE-ZR at 10.3125Gbps, 10GBASE-ZW at 9.953Gbps and LTE systems among its applications. The module supports up to 10.7Gbps, uses a hot-pluggable SFP+ footprint and complies with SFP+ MSA and SFF-8472. By admin on 2025-05-18

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E***y

Canada

Verified Purchase

5 .0

2026-07-10

We originally purchased a small quantity for compatibility testing and later expanded the order after successful validation. The 10.7Gbps maximum data-rate specification, 40km SMF reach and SFP+ MSA compliance fit our requirements well. They have been running continuously without unexpected link drops.

31 Helpful vote Comments

D***l

Bulgaria

Verified Purchase

5 .0

2026-06-27

The price is reasonable compared with buying equivalent OEM-coded optics. We tested them in our lab before production deployment and found the 1270nm channel stable over our CWDM setup. For a 40km 10G optical transceiver, the overall value is good.

65 Helpful vote Comments

L***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2026-01-26

The modules performed as expected on a 10GbE connection over single-mode fiber. We checked optical levels through DOM after installation and saw stable readings. This is a good option when you need a 10G CWDM 1270nm optic for a longer campus or metro-style fiber run.

68 Helpful vote Comments

A***n

Macao

Verified Purchase

5 .0

2025-12-31

Our team tested the LS-CW2710-40I with several multi-vendor switches before approving it for production. Cisco, Juniper and Dell platforms all established the expected 10G connection in our test matrix. Optical diagnostics were readable, and we had no packet-loss issues during extended traffic testing.

13 Helpful vote Comments

N***s

Malaysia

Verified Purchase

5 .0

2025-12-30

Good value for long-distance 10G.

46 Helpful vote Comments

M***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-10-27

Used these in a small data center expansion with several racks of 10G switches. The Duplex LC interface fit our existing patch panels, and the modules were detected correctly across different switch brands during our compatibility checks. DOM is especially useful for ongoing maintenance. :)

63 Helpful vote Comments

N***s

Brunei Darussalam

Verified Purchase

5 .0

2025-09-23

I bought these for a 10G fiber connection between a main office and a remote facility. The link came up immediately, and DOM gave us enough information to verify the optical condition without connecting a separate test instrument. Very practical for field support. :-)

65 Helpful vote Comments

P***n

Poland

Verified Purchase

5 .0

2025-06-25

Worked first try. =D

19 Helpful vote Comments

S***n

Philippines

Verified Purchase

5 .0

2025-05-27

We deployed a batch of LS-CW2710-40I modules across a mixed Cisco and HPE environment. The SFP+ ports recognized them without any issues, and the 10Gbps links stayed stable during several days of traffic testing. For a 40km single-mode fiber run, these have been very reliable.

45 Helpful vote Comments

A***z

United Arab Emirates

Verified Purchase

5 .0

2025-05-02

We used these for a 10G CWDM link between two campus buildings. The 1270nm wavelength matched our existing CWDM plan, and the Duplex LC SMF connection came up immediately on the switch. DOM readings were also visible, which made commissioning much easier.

13 Helpful vote Comments

O***l

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-04-06

Nice optics for the money.

76 Helpful vote Comments

S***s

Argentina

Verified Purchase

4 .0

2025-03-08

The shipment arrived a day later than our original expectation, and one package had a slightly dented outer box. The modules were protected inside and worked correctly after installation. Performance on the 10G 40km SMF link has been fine, so the issue was only with delivery/packaging.

14 Helpful vote Comments

J***e

India

Verified Purchase

5 .0

2025-03-01

We tested these against Cisco-compatible switch ports and had no coding or link-up problems. The 1270nm CWDM channel was exactly what our fiber plan required. After the initial test, we ordered additional units for the remaining aggregation links.

92 Helpful vote Comments

M***n

Cocos (Keeling) Islands

Verified Purchase

5 .0

2025-01-07

Processed order and shipped as promised. Will buy again from this merchant. Very happy.

46 Helpful vote Comments

E***z

Finland

Verified Purchase

5 .0

2024-12-21

No issues so far. ;)

48 Helpful vote Comments

R***l

Iran, Islamic Republic of

Verified Purchase

5 .0

2024-12-18

Deployed in a network cabinet where temperatures can fluctuate significantly. The industrial temperature specification was important for us, and the modules remained stable through the environmental test. The 40km SMF reach also gives us useful headroom for future site expansion.

60 Helpful vote Comments

A***y

Singapore

Verified Purchase

5 .0

2024-12-03

Great fit for our industrial cabinets. The -40 to 85°C operating range was one of the main reasons we selected this model for outdoor network enclosures. We also like having DOM available for checking temperature, voltage, TX power and RX power remotely.

23 Helpful vote Comments

A***s

Brunei Darussalam

Verified Purchase

5 .0

2024-10-23

Good choice for 40km 10G links.

9 Helpful vote Comments

N***n

Japan

Verified Purchase

5 .0

2024-08-20

We needed a long-reach 10G SFP+ transceiver for a campus fiber backbone without replacing the existing SMF. The 1270nm CWDM wavelength worked with our channel plan, and the 40km rating gave us plenty of margin for the actual link distance. Installation was straightforward.

93 Helpful vote Comments

B***l

Japan

Verified Purchase

5 .0

2024-08-09

These are now part of our standard spare stock for long-distance 10G SFP+ deployments. The industrial temperature range is useful for equipment installed outside the main data room, while DOM helps us troubleshoot RX power and temperature remotely. The pricing also works well for larger rollouts.

7 Helpful vote Comments

J***l

United Kingdom

Verified Purchase

5 .0

2024-08-05

Excellent service. 10/25/40G Transceiver Modules arrived Faster than expected, appropriately packaged, and have significantly improved data transfer speed.

48 Helpful vote Comments

P***s

Hong Kong

Verified Purchase

5 .0

2024-07-28

Packaging was a little more basic than expected, but the modules themselves arrived intact and worked normally. We tested the 10G link with single-mode fiber and verified DOM readings after installation. No performance concerns so far.

12 Helpful vote Comments

B***s

Brazil

Verified Purchase

5 .0

2024-07-06

We use CWDM to carry multiple wavelengths over the same single-mode fiber infrastructure. This 1270nm SFP+ module integrated cleanly into the existing setup and maintained a stable 10G link. The SFF-8472 diagnostics are useful for our NOC team because we can monitor optic health remotely.

86 Helpful vote Comments

W***r

Austria

Verified Purchase

5 .0

2024-06-09

Solid 40km link. :)

77 Helpful vote Comments

P***t

Italy

Verified Purchase

5 .0

2024-05-27

l-p.com gave me choices and options that I couldn't find anywhere else; the website is a marvelous resource for comparing and choosing 100BASE 10/25/40G Transceiver Modules. They also provide a great deal of information that helped me to make my choice. I highly recommend this company.

26 Helpful vote Comments

K***t

Taiwan, Province of China

Verified Purchase

5 .0

2024-04-27

For a regional network upgrade, we needed 10G CWDM optics that could work across different OEM switch platforms. These modules made the procurement much easier because we could standardize the same optic across multiple compatible environments. The DOM readings are also helpful when monitoring fiber attenuation and receive levels.

64 Helpful vote Comments

P***n

Turkey

Verified Purchase

5 .0

2024-03-16

Customer service rep was very pleasant and accomodating.

62 Helpful vote Comments

V***c

Singapore

Verified Purchase

5 .0

2024-03-06

no issue so far on the item.

49 Helpful vote Comments

S***n

Bangladesh

Verified Purchase

5 .0

2024-02-19

They have had all the parts i have needed and shipped them out right away with no delay.

53 Helpful vote Comments

E***l

France

Verified Purchase

5 .0

2024-02-10

Reliable module.

19 Helpful vote Comments

G***s

Ireland

Verified Purchase

5 .0

2024-01-24

We installed a pair on a long campus fiber route connecting an aggregation switch to a remote building. The 1270nm wavelength and Duplex LC interface matched our existing CWDM equipment, so there was no need to change the fiber plant. Link stability has been excellent under normal production traffic.

14 Helpful vote Comments

R***n

United States

Verified Purchase

5 .0

2024-01-06

Very good for crimping, not bad for cutting,

12 Helpful vote Comments

M***s

United States

Verified Purchase

5 .0

2023-12-29

I trust Link-pp, and have bought from them many times.

11 Helpful vote Comments

E***g

United States

Verified Purchase

5 .0

2023-11-26

Searching and purchasing was very easy at Link-pp.

35 Helpful vote Comments

S***n

Norway

Verified Purchase

5 .0

2023-10-30

I spent a lot of time looking at the 1000 Base-T Optical Transceiver Module and finally decided on l-p.com. The website was very well done so that eased my mind a bit. When the 1000 Base-T Optical Transceiver Module arrived I was pleased that they looked just as good as it did on the website and worked without problem.

71 Helpful vote Comments

m***s

Netherlands

Verified Purchase

5 .0

2023-09-24

My contact with LINK-PP involved more than just a few clicks and a purchase for 1000Base-T Optical Transceiver Module. I had to make a return for no fault of the Company and they were helpful and courteous throughout the process. I am quite pleased.

18 Helpful vote Comments

P***s

Ireland

Verified Purchase

5 .0

2023-09-02

Very surprised with the Fast shipping. Great shopping experience with LINK-PP!

82 Helpful vote Comments

M***e

Thailand

Verified Purchase

5 .0

2023-08-31

Had exactly what i was looking for - shipped immediately - received exactly as advertised. This was my first experience buying Optical Transceiver Module online and i won't hesitate to buy from l-p.com again.

17 Helpful vote Comments

B***g

Malaysia

Verified Purchase

5 .0

2023-08-16

The price was low but the quality was better than expected. They were an excellent value for my money. Highly recommend!

51 Helpful vote Comments

M***S

United States

Verified Purchase

5 .0