Does this transceiver support standard DDM/DOM telemetry for real-time monitoring?

Yes, it fully supports Digital Diagnostic Monitoring (DDM). Your network admins can easily monitor optical power, voltage, laser bias current, and operating temperature in real-time through your switch's CLI or management dashboard.

Since this is a BiDi SFP, do I need to pair it with a specific module on the other end of the fiber?

Yes, you must pair this LS-SC55311G-40I (1550nm-TX/1310nm-RX) with its exact WDM counterpart that transmits at 1310nm and receives at 1550nm. Both will run smoothly over a single strand of standard Simplex SC Single Mode Fiber (SMF).

Will this 1G SFP BiDi module work seamlessly with my existing Cisco Catalyst and Juniper switches?

Absolutely. It is fully MSA and SFF-8472 compliant, ensuring plug-and-play interoperability across major OEM brands like Cisco, Juniper, and Arista without throwing any vendor lock-in errors.

We need to deploy these for a large metropolitan network. Are there discounts for bulk purchasing?

Yes, we offer tiered pricing. For orders over 100 units, the price drops significantly, and there are additional discounts for higher volumes. Contact our sales team for a custom quote on large-scale deployments.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 1G BiDi SFP; 202204

Click to open expanded view

LINK-PP LS-SC55311G-40I 1G SFP BiDi 1550nm-TX/1310nm-RX 40km Simplex SC DOM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-SC55311G-40I 1G SFP BiDi 1550nm-TX/1310nm-RX 40km Simplex SC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 202204
Price: 18.49 USD
Availability: InStock
Rating: 5 (24 reviews)

# 202204

Product: LINK-PP LS-SC55311G-40I 1G SFP BiDi 1550nm-TX/1310nm-RX 40km Simplex SC DOM SMF Optical Transceiver Module (Industrial)
SKU: 202204
P/N: LS-SC55311G-40I
Price: $ 21.5
Stock: 30 in Stock
Sold: 870
Product URL: https://www.l-p.com/products/491683.htm

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

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

For Order Over $5000 Get $100.00 Off , Code: Linkpp100

New Users: $10 Coupon for Orders , Code: linkpp2610

24 Reviews

4 Questions

Request Stock

870 Sold

$ 21.5

Free shipping over $600, If you need a more favorable price, please contact us directly.

Qty (pcs) :

Unit Price :

$ 21.5

100

$ 20.425

1000

$ 19.78

3000

$ 19.135

6000

$ 18.49

Manufacture: LINK-PP

P/N: LS-SC55311G-40I

Compatible:: LINK-PP

Compatible P/N:: LS-SC31551G-03C | 3km; LS-SC31551G-03I | 3km; LS-SC55311G-03C | 3km; LS-SC55311G-03I | 3km; LS-SC31491G-10C | 10km; LS-SC31551G-10C | 10km; LS-SC31551G-10I | 10km; LS-SC49311G-10C | 10km; LS-SC55311G-10C | 10km; LS-SC55311G-10I | 10km; LS-SC31491G-20C | 20km; LS-SC31551G-20C | 20km; LS-SC31551G-20I | 20km; LS-SC49311G-20C | 20km; LS-SC55311G-20C | 20km; LS-SC55311G-20I | 20km; LS-SC31551G-40C | 40km; LS-SC31551G-40I | 40km; LS-SC55311G-40C | 40km; LS-SC55311G-40I | 40km

Shipping:

To Be Negotiated

Free Shipping

Can't deliver

to United States via {{now_chooseship?now_chooseship.name:''}}

Estimated delivery time : {{now_chooseship?now_chooseship.datemin:''}}-{{now_chooseship?now_chooseship.datemax:''}} days. See details

5-Year Warranty 30-Day Returns 30-Day Exchange

Stock:

{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}} .

Quantity:

( Min. Order {{detail_data.prodInfo.minimum_ordered_quantity}} )

undeliverable

Total Price:

{{ detail_data.displayed_price.unit_prefix }} {{ detail_data.displayed_price.original_total_price }} ( {{ detail_data.displayed_price.rate_of_discount }}% OFF ) {{detail_data.displayed_price.ex_sell_type}}

Add to wish

Specifications

Specification
Videos
Matching Products
Download
Q&A
Customer Reviews

LINK-PP LS-SC55311G-40I 1G BiDi SFP Specifications

The LINK-PP LS-SC55311G-40I is an industrial-grade 1G BiDi SFP transceiver engineered for Gigabit Ethernet and 1.063Gbps Fiber Channel applications. Utilizing WDM technology over single-mode fiber, this 1.25Gbps optical module delivers high-speed data transmission. Its robust MSA-compliant design ensures seamless integration into various networking environments requiring reliable, long-distance connectivity.

LINK-PP Part Number	LS-SC55311G-40I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1550nm-TX/1310nm-RX	Max Cable Distance	40km
Connector	Simplex SC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-9 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	-24dBm	Receiver Overload	-3dBm
DOM Support	Yes	Operating Temperature Range	-40 to 85°C

Videos

Matching Products

Pictures

ID#

Description

Price

Stock

Add to Cart

Download

Product Drawing

PDF
LS-SC55311G-40I.pdf

Questions & Answers
Ask a Question

No data

Q: Does this transceiver support standard DDM/DOM telemetry for real-time monitoring? By D***t on 2026-01-21

A: Yes, it fully supports Digital Diagnostic Monitoring (DDM). Your network admins can easily monitor optical power, voltage, laser bias current, and operating temperature in real-time through your switch's CLI or management dashboard. By admin on 2026-01-22
Q: Since this is a BiDi SFP, do I need to pair it with a specific module on the other end of the fiber? By C***k on 2026-01-18

A: Yes, you must pair this LS-SC55311G-40I (1550nm-TX/1310nm-RX) with its exact WDM counterpart that transmits at 1310nm and receives at 1550nm. Both will run smoothly over a single strand of standard Simplex SC Single Mode Fiber (SMF). By admin on 2026-01-18
Q: Will this 1G SFP BiDi module work seamlessly with my existing Cisco Catalyst and Juniper switches? By D***l on 2025-10-16

A: Absolutely. It is fully MSA and SFF-8472 compliant, ensuring plug-and-play interoperability across major OEM brands like Cisco, Juniper, and Arista without throwing any vendor lock-in errors. By admin on 2025-10-16
Q: We need to deploy these for a large metropolitan network. Are there discounts for bulk purchasing? By W***z on 2025-07-22

A: Yes, we offer tiered pricing. For orders over 100 units, the price drops significantly, and there are additional discounts for higher volumes. Contact our sales team for a custom quote on large-scale deployments. By admin on 2025-07-22

Customer Reviews
Write a Review

{{stardata.star}}

{{comment.count}} reviews
5 Stars

{{comment.star5}}%

4 Stars

{{comment.star4}}%

3 Stars

{{comment.star3}}%

2 Stars

{{comment.star2}}%

1 Star

{{comment.star1}}%

All Reviews ({{comment.star_num?comment.star_num:comment.count}})

All Reviews

5 stars only

4 stars only

3 stars only

2 stars only

1 star only
Reviews with Pictures ( {{comment.pic_comment}} )
See All Reviews

No data

B***g

Macao

Verified Purchase

5 .0

2026-06-17

Needed a tough 1G BiDi SFP 40km for a harsh environment. This delivered.

240 Helpful vote Comments

S***z

Finland

Verified Purchase

5 .0

2026-06-04

Great industrial grade SFP for extreme temps.

37 Helpful vote Comments

J***n

Panama

Verified Purchase

5 .0

2026-04-26

Deployed these 40km SFP modules in outdoor NEMA enclosures. Survives -40°C extreme weather easily! ❄️

227 Helpful vote Comments

B***l

South Africa

Verified Purchase

5 .0

2026-03-23

Perfectly compatible with our mixed vendor gear. The single-fiber bidirectional design saves cabling.

254 Helpful vote Comments

S***s

Australia

Verified Purchase

5 .0

2026-03-19

Flawless 1G SFP BiDi for our campus fiber.

215 Helpful vote Comments

A***r

France

Verified Purchase

5 .0

2026-03-06

Solid 1550nm TX module for the price!

170 Helpful vote Comments

K***s

Germany

Verified Purchase

5 .0

2026-03-04

Works as expected in our unmanaged switches.

230 Helpful vote Comments

M***s

United Kingdom

Verified Purchase

5 .0

2026-02-16

Deployed 50 of these LS-SC55311G-40I modules for a metropolitan surveillance project. The -40 to 85°C rating is vital for outdoor cabinets. Completely plug-and-play with our ruggedized industrial PoE switches.

216 Helpful vote Comments

B***n

Pakistan

Verified Purchase

5 .0

2026-01-10

Upgraded our campus fiber network using these Simplex SC modules. By utilizing WDM technology, we doubled bandwidth without trenching new fiber. Perfect for reliable 1.063Gbps Fiber Channel NAS remote backups.

136 Helpful vote Comments

D***n

Chile

Verified Purchase

5 .0

2026-01-01

Linked two buildings 25km apart. The -24dBm receiver sensitivity on these modules is legit.

145 Helpful vote Comments

M***z

Dominican Republic

Verified Purchase

4 .0

2025-12-08

Delivery took an extra day. The industrial SFP modules themselves are solid for outdoor cabinets.

17 Helpful vote Comments

N***z

Dominican Republic

Verified Purchase

5 .0

2025-12-07

Plug and play for our IoT gateway. ⚙️

247 Helpful vote Comments

J***s

Ethiopia

Verified Purchase

5 .0

2025-12-05

The DDM data on this 1G industrial transceiver is spot on. Highly recommend!

195 Helpful vote Comments

A***n

France

Verified Purchase

5 .0

2025-11-26

Excellent 1550nm TX optics for remote telecom cell sites. SFF-8472 compliance is superb.

217 Helpful vote Comments

D***z

Denmark

Verified Purchase

5 .0

2025-10-04

Tested this 1G SFP BiDi 1550nm-TX/1310nm-RX in our edge telecom site. It handles 85°C summer rack temps flawlessly. DDM readouts match our fluke meters. Great OEM replacement for long-haul backhaul!

244 Helpful vote Comments

E***z

Ghana

Verified Purchase

5 .0

2025-09-18

Ideal 1G SC SFP for IP cameras.

124 Helpful vote Comments

P***n

Venezuela

Verified Purchase

5 .0

2025-09-14

Simplex SC transceiver linked up instantly!

200 Helpful vote Comments

J***z

Belgium

Verified Purchase

5 .0

2025-07-28

DOM telemetry works great on Cisco switches.

157 Helpful vote Comments

J***s

Russian Federation

Verified Purchase

5 .0

2025-07-17

We bulk ordered these 1.25Gbps SMF transceivers for data center interconnects. Fantastic value!

82 Helpful vote Comments

J***n

Ukraine

Verified Purchase

5 .0

2025-07-06

Used this Simplex SC SFP to upgrade our factory automation network without hassle.

229 Helpful vote Comments

L***n

Dominican Republic

Verified Purchase

5 .0

2025-06-23

Fast shipping, reliable 40km fiber optic link.

230 Helpful vote Comments

R***s

Spain

Verified Purchase

5 .0

2025-05-30

I manage a WDM network and these industrial 1G SC transceivers are excellent. Running them over 35km of single-mode fiber with zero packet loss. The DFB laser cuts through splice losses.

71 Helpful vote Comments

B***s

Philippines

Verified Purchase

5 .0

2025-05-23

Affordable BiDi SFP saves us fiber strands.

99 Helpful vote Comments

M***n

Austria

Verified Purchase

5 .0