We are setting up remote LTE cell tower nodes in sub-zero winter conditions — will this module cold-start without issues?

Yes, this module is rated for industrial temperature. For outdoor LTE remote radio head (RRH) deployments, our industrial-grade modules are tested to cold-start and operate reliably across the full range of -40°C to +85°C (-40°F to +185°F).

We're running a 35km link between data centers — do we need single-mode or multi-mode fiber patch cords for this module?

You must use single-mode fiber with duplex LC connectors. Multi-mode fiber is strictly unsuitable for DWDM long-haul links due to extreme modal dispersion at C-band wavelengths.

Can we plug this DWDM module directly into channel 26 of a standard 100GHz ITU grid passive MUX/DEMUX?

Yes, absolutely. This LS-DW2610-40I module is precisely hard-coded to 1556.55nm (Channel 26) in compliance with the standard 100GHz C-Band ITU grid. You can plug it directly into Port/Channel 26 of any standardized passive MUX/DEMUX unit without additional frequency offset adjustment.

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H3C DWDM-SFP10G-56.55-40-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)

Name: H3C DWDM-SFP10G-56.55-40-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 223423
Price: 257.14 USD
Availability: InStock
Rating: 4.9 (30 reviews)

# 223423

Product: H3C DWDM-SFP10G-56.55-40-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)
SKU: 223423
P/N: LS-DW2610-40I
Price: $ 299
Stock: 342 in Stock
Sold: 540
Product URL: https://www.l-p.com/products/486015.htm

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Manufacture: LINK-PP

P/N: LS-DW2610-40I

Compatible:: Cisco; LINK-PP; Arista; Brocade; Ciena; Dell; Extreme; FS; Generic; H3C; HW; Juniper; MRV; Netgear

Wavelength:: C17; C18; C19; C20; C21; C22; C23; C24; C25; C26; C27; C28; C29; C30; C31; C32; C33; C34; C35; C36; C37; C38; C39; C40

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H3C DWDM-SFP10G-56.55-40-I Compatible LINK-PP C26 10G SFP+ Specifications

DWDM-SFP10G-56.55-40-I defines a 10G SFP+ DWDM optical transceiver at 1556.55nm within the C-band, incorporating a cooled EML laser and PIN photodiode, duplex LC connectivity, up to 40 km reach over single-mode fiber, real-time DDM support, and an operating temperature range of −40 to +85 °C.

H3C Part Number	DWDM-SFP10G-56.55-40-I	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1556.55nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN
TX Power	-1 to +2dBm	RX Power	-16 to -1dBm
Receiver Sensitivity	-15.5dBm	DDM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	SFP+ MSA Compliant, CPRI, eCPRI

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Q: We are setting up remote LTE cell tower nodes in sub-zero winter conditions — will this module cold-start without issues? By V***s on 2026-01-11

A: Yes, this module is rated for industrial temperature. For outdoor LTE remote radio head (RRH) deployments, our industrial-grade modules are tested to cold-start and operate reliably across the full range of -40°C to +85°C (-40°F to +185°F). By admin on 2026-01-12
Q: We're running a 35km link between data centers — do we need single-mode or multi-mode fiber patch cords for this module? By B***n on 2025-08-25

A: You must use single-mode fiber with duplex LC connectors. Multi-mode fiber is strictly unsuitable for DWDM long-haul links due to extreme modal dispersion at C-band wavelengths. By admin on 2025-08-26
Q: Can we plug this DWDM module directly into channel 26 of a standard 100GHz ITU grid passive MUX/DEMUX? By D***y on 2025-06-24

A: Yes, absolutely. This LS-DW2610-40I module is precisely hard-coded to 1556.55nm (Channel 26) in compliance with the standard 100GHz C-Band ITU grid. You can plug it directly into Port/Channel 26 of any standardized passive MUX/DEMUX unit without additional frequency offset adjustment. By admin on 2026-06-25

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D***l

Belarus

Verified Purchase

5 .0

2026-03-27

Deployed 50 of these DWDM modules in a data center interconnect. Power consumption is low, and the EML/PIN combo gives us a solid link budget. DOM makes troubleshooting super easy when we tweak patch panels.

50 Helpful vote Comments

K***r

Nepal

Verified Purchase

4 .0

2026-02-11

These industrial DWDM SFP+ modules are running cool inside our high-density aggregation switches with superb link budget metrics. The courier missed the Friday afternoon delivery window, forcing our tech team to reschedule the datacenter installation for Monday morning. Hardware quality is definitely 5 stars.

19 Helpful vote Comments

E***s

New Zealand

Verified Purchase

5 .0

2025-12-08

C26 1556.55nm fits our 100GHz grid perfectly! No crosstalk and it lines up with our mux/demux without tweaks.

85 Helpful vote Comments

J***s

Ireland

Verified Purchase

5 .0

2025-11-22

Tested receiver sensitivity across a patched 36km single-mode fiber line, and error rates stayed well below threshold. The build quality feels rigid, and the duplex LC connector clicks in firmly. Will order another batch for our secondary ring!

79 Helpful vote Comments

L***z

Lithuania

Verified Purchase

5 .0

2025-10-06

We subjected this 10G CWDM optical module to continuous thermal stress testing inside an unheated, remote substation enclosure to simulate harsh winter conditions. The wide-temperature engineering proved its worth — the transmitter exhibited zero frequency drift or signal degradation even during severe ambient temperature fluctuations. Thermal dissipation stayed remarkably low inside high-density switch cages, making it an ideal, rock-solid choice for unconditioned outdoor cabinet deployments and industrial automation backhauls.

135 Helpful vote Comments

B***y

Austria

Verified Purchase

5 .0

2025-09-21

Checked with our OSA — 1556.55nm accuracy is rock solid!

52 Helpful vote Comments

S***r

Macao

Verified Purchase

4 .0

2025-09-14

The DWDM module itself works flawlessly across our single-mode fiber span with zero bit errors and crystal-clear telemetry. However, regional courier routing took an unexpected detour, delaying delivery past our scheduled maintenance window. Excellent hardware performance overall, just give yourself a few extra days for shipping.

24 Helpful vote Comments

G***r

Hungary

Verified Purchase

5 .0

2025-08-27

Adding extra 10G pipes over leased dark fiber gets expensive fast. Dropping this C26 1556.55nm 10G SFP+ transceiver into our existing DWDM grid solved our capacity bottleneck overnight at a fraction of lease costs.

101 Helpful vote Comments

R***d

Malaysia

Verified Purchase

5 .0

2025-07-19

Hot-plug & go, no config needed on our 10G switches.

78 Helpful vote Comments

J***n

Brunei Darussalam

Verified Purchase

5 .0

2025-07-06

Our ISP needed a cost-effective 10G DWDM option for metro rings. These LS-DW2610-40I modules hit the C26 wavelength, 40km reach, and DOM requirements without breaking the budget. Plug-and-play with our core gear.

116 Helpful vote Comments

S***z

Romania

Verified Purchase

5 .0

2025-06-25

Deployed these LS-DW2610-40I 10G DWDM modules across a 30km single-mode fiber link connecting our remote aggregation nodes. Both Rx and Tx power levels stayed well within target thresholds. Definitely saved our quarterly budget without sacrificing optical reliability.

99 Helpful vote Comments

J***y

Maldives

Verified Purchase

4 .0

2025-06-09

We deployed these 10G DWDM optics across a 35km metro link and achieved rock-solid link-up on the first attempt. The delivery was delayed by 2 days at international customs clearance due to routine import paperwork checks. Product quality is superb, but budget extra transit time for overseas orders.

27 Helpful vote Comments

D***n

Indonesia

Verified Purchase

5 .0

2025-05-14

DOM monitoring is accurate, easy to read via CLI. Temperature, voltage, and optical power all show up correctly.

91 Helpful vote Comments

M***e

Turkey

Verified Purchase

5 .0

2025-04-28

We added channel 26 (1556.55nm) DWDM modules to our existing passive MUX/DEMUX system. The wavelength stability is precise, and insertion loss remained minimal across the entire passive multiplexer stack. Excellent option for scaling existing fiber assets.

127 Helpful vote Comments

H***i

New Zealand

Verified Purchase

5 .0

2025-04-09

Great price and quick shipping. Great seller.

65 Helpful vote Comments

V***d

Thailand

Verified Purchase

5 .0

2024-12-24

Everyone we interacted with was professional and very kind. We are happy with our quality RJ 45 modules & would recommend l-p.com to anyone!

44 Helpful vote Comments

c***t

Germany

Verified Purchase

5 .0

2024-10-10

The website is very easy to use, and I appreciate that since a lot of items I order for my technicians I am not aware of. Your website shows exactly what I need and ordering is easy. Really satisfied with the shopping experience.

38 Helpful vote Comments

T***i

United States

Verified Purchase

5 .0

2024-10-04

Link-ppstore is my first choice.

29 Helpful vote Comments

A***v

United States

Verified Purchase

5 .0

2024-08-28

very good product and Fast shipping. Will recommend to friends.

33 Helpful vote Comments

T***a

Russian Federation

Verified Purchase

5 .0

2024-06-10

Product was as advertised ... communication regarding shipment and delivery was excellent.

12 Helpful vote Comments

A***v

Netherlands

Verified Purchase

5 .0

2024-05-04

The staff team was able to aid us in getting up and running. Many thanks to the entire team at l-p.com!

48 Helpful vote Comments

c***t

Canada

Verified Purchase

5 .0

2024-04-19

The 10/25/40G Transceiver Modules and service has been great, we have enjoyed good performance. Response at times is a little slow.

65 Helpful vote Comments

a***A

United States

Verified Purchase

5 .0

2024-01-24

Smooth transaction, had what I needed, good prices. Doesn't get much better!

93 Helpful vote Comments

R***s

Philippines

Verified Purchase

5 .0

2023-12-09

Went to this site for a computer hard drive. Quickly found exactly what I wanted and for a great price. Was done in minutes.

31 Helpful vote Comments

M***s

Macao

Verified Purchase

5 .0

2023-11-28

The 10/25/40G Transceiver Modules are great and their service is even better. Most impressive was their communication throughout the entire process. They really answered and dealt with all my questions. Hands down, a superior online shopping experience compared to the local shop.

28 Helpful vote Comments

H***e

United States

Verified Purchase

5 .0

2023-11-19

The website was easy to navigate, and the checkout process was easy.

29 Helpful vote Comments

B***k

Spain

Verified Purchase

5 .0