Will this 1G BiDi SFP trigger vendor lock-in errors if I use it on a mix of Cisco and Juniper switches?

Not at all! The LS-BL55491G-A6C is fully MSA compliant and rigorously tested for multi-brand environments. It offers true plug-and-play interoperability with Cisco, Juniper, Arista, Dell, and other major OEM equipment without throwing any compatibility alarms.

What type of patch cable is required for this 160km module? Can I use our existing OM4 multimode fiber?

No, you cannot use OM4 or any multimode fiber for this optic. Because it is engineered for ultra-long-haul 160km transmission, it exclusively requires standard OS2 Single Mode Fiber (SMF) terminated with a Simplex LC connector.

We need to ensure these optics meet strict regulatory standards for a government project. Are they certified?

Absolutely. Our 1G BiDi transceivers strictly comply with IEEE, SFP MSA, and SFF-8472 DOM protocols. They also hold international certifications for CE, FCC, RoHS, and meet Class I FDA laser safety requirements, making them fully compliant for government and enterprise telecom networks.

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LINK-PP LS-BL55491G-A6C 1G BiDi SFP 1550nm-TX/1490nm-RX 160km Simplex LC DOM SMF Transceiver Module

Name: LINK-PP LS-BL55491G-A6C 1G BiDi SFP 1550nm-TX/1490nm-RX 160km Simplex LC DOM SMF Transceiver Module
Brand: LINK-PP
SKU: 201975
Price: 49.88 USD
Availability: InStock
Rating: 5 (47 reviews)

# 201975

Product: LINK-PP LS-BL55491G-A6C 1G BiDi SFP 1550nm-TX/1490nm-RX 160km Simplex LC DOM SMF Transceiver Module
SKU: 201975
P/N: LS-BL55491G-A6C
Price: $ 58
Stock: 120 in Stock
Sold: 680
Product URL: https://www.l-p.com/products/491459.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

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$ 53.36

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Manufacture: LINK-PP

P/N: LS-BL55491G-A6C

Compatible:: Cisco; LINK-PP; Arista; Brocade; Dell; Extreme; FS; Generic; H3C; HPE Aruba; Intel; Juniper; NVIDIA/Mellanox

Compatible P/N:: LS-BL31551G-02C | 2km; LS-BL55311G-02C | 2km; LS-BL31551G-03C | 3km; LS-BL31551G-03I | 3km; LS-BL55311G-03C | 3km; LS-BL55311G-03I | 3km; LS-BL31491G-10C | 10km; LS-BL31491G-10I | 10km; LS-BL31551G-10C | 10km; LS-BL31551G-10I | 10km; LS-BL31551GE-10C | 10km; LS-BL49311G-10C | 10km; LS-BL49311G-10I | 10km; LS-BL49551G-10C | 10km; LS-BL49551G-10I | 10km; LS-BL55311G-10C | 10km; LS-BL55311G-10I | 10km; LS-BL55311GE-10C | 10km; LS-BL55491G-10C | 10km; LS-BL55491G-10I | 10km; LS-BL31551G-15C | 15km; LS-BL31491G-20C | 20km; LS-BL31491G-20I | 20km; LS-BL31551G-20C | 20km; LS-BL31551G-20I | 20km; LS-BL49311G-20C | 20km; LS-BL49311G-20I | 20km; LS-BL49551G-20C | 20km; LS-BL55311G-20C | 20km; LS-BL55311G-20I | 20km; LS-BL55491G-20C | 20km; LS-BL31491G-40C | 40km; LS-BL31491G-40I | 40km; LS-BL31551G-40C | 40km; LS-BL31551G-40I | 40km; LS-BL49311G-40C | 40km; LS-BL49311G-40I | 40km; LS-BL55311G-40C | 40km; LS-BL55311G-40I | 40km; LS-BL31551G-60C | 60km; LS-BL31551G-60I | 60km; LS-BL49551G-60C | 60km; LS-BL55311G-60C | 60km; LS-BL55311G-60I | 60km; LS-BL55491G-60C | 60km; LS-BL27331G-80C | 80km; LS-BL33271G-80C | 80km; LS-BL49551G-80C | 80km; LS-BL49551G-80I | 80km; LS-BL55491G-80C | 80km; LS-BL55491G-80I | 80km; LS-BL49551G-A0C | 100km; LS-BL49551G-A0I | 100km; LS-BL55491G-A0C | 100km; LS-BL55491G-A0I | 100km; LS-BL49551G-A2C | 120km; LS-BL49551G-A2I | 120km; LS-BL55491G-A2C | 120km; LS-BL55491G-A2I | 120km; LS-BL49551G-A5C | 150km; LS-BL49551G-A5I | 150km; LS-BL55491G-A5C | 150km; LS-BL55491G-A5I | 150km; LS-BL49551G-A6C | 160km; LS-BL49551G-A6I | 160km; LS-BL55491G-A6C | 160km; LS-BL55491G-A6I | 160km

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LINK-PP LS-BL55491G-A6C 1G BiDi SFP Specifications

The LINK-PP LS-BL55491G-A6C is a high-performance 1.25Gbps BiDi SFP transceiver perfectly engineered for extreme long-haul telecommunications. Operating seamlessly over single-mode fiber, this commercial-grade optical module ensures exceptional Gigabit Ethernet connectivity up to 160km. Featuring a premium 1550nm DFB laser and APD photodiode, it delivers cost-effective, robust performance for extended WDM network deployments.

LINK-PP Part Number	LS-BL55491G-A6C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1550nm-TX/1490nm-RX	Max Cable Distance	160km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	APD
TX Power	0 to +5dBm	RX Power	-28 to -1dBm
Receiver Sensitivity	<-34dBm	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	SFP MSA、SFF-8472

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Q: Will this 1G BiDi SFP trigger vendor lock-in errors if I use it on a mix of Cisco and Juniper switches? By K***n on 2026-06-12

A: Not at all! The LS-BL55491G-A6C is fully MSA compliant and rigorously tested for multi-brand environments. It offers true plug-and-play interoperability with Cisco, Juniper, Arista, Dell, and other major OEM equipment without throwing any compatibility alarms. By admin on 2026-06-12
Q: What type of patch cable is required for this 160km module? Can I use our existing OM4 multimode fiber? By M***n on 2026-03-02

A: No, you cannot use OM4 or any multimode fiber for this optic. Because it is engineered for ultra-long-haul 160km transmission, it exclusively requires standard OS2 Single Mode Fiber (SMF) terminated with a Simplex LC connector. By admin on 2026-03-02
Q: We need to ensure these optics meet strict regulatory standards for a government project. Are they certified? By S***z on 2025-11-07

A: Absolutely. Our 1G BiDi transceivers strictly comply with IEEE, SFP MSA, and SFF-8472 DOM protocols. They also hold international certifications for CE, FCC, RoHS, and meet Class I FDA laser safety requirements, making them fully compliant for government and enterprise telecom networks. By admin on 2025-11-07

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J***n

Czech Republic

Verified Purchase

4 .0

2026-06-27

Fedex box was slightly dented upon arrival, but the 1G BiDi SFP works flawlessly.

8 Helpful vote Comments

J***z

Switzerland

Verified Purchase

5 .0

2026-05-31

MSA compliant and plug-and-play. TX power at 1550nm is perfectly within spec. ✅

104 Helpful vote Comments

S***k

Finland

Verified Purchase

5 .0

2026-05-22

This 1G BiDi transceiver handled our 140km fiber run with zero packet loss.

159 Helpful vote Comments

K***z

Austria

Verified Purchase

5 .0

2026-04-13

Needed a reliable 1G BiDi SFP for a long-distance interconnect. This exceeded expectations.

135 Helpful vote Comments

D***s

Viet Nam

Verified Purchase

5 .0

2026-04-08

Top notch Simplex LC DOM module.

120 Helpful vote Comments

J***s

Japan

Verified Purchase

5 .0

2026-03-20

Used the LS-BL55491G-A6C to bridge two campus sites. The 1550nm/1490nm pairing works brilliantly over a single strand of fiber. Tested with Extreme switches, zero vendor lock-in issues.

124 Helpful vote Comments

E***n

Japan

Verified Purchase

5 .0

2026-03-17

Best cost-effective BiDi SFP module out there.

217 Helpful vote Comments

A***e

Netherlands

Verified Purchase

5 .0

2026-01-26

Instant link on our Dell switches! ⚡

177 Helpful vote Comments

P***s

Sweden

Verified Purchase

5 .0

2026-01-07

Replaced my old optics with these 160km SMF transceivers. Ping times are incredibly stable.

36 Helpful vote Comments

L***n

Austria

Verified Purchase

5 .0

2026-01-04

Easily configured on generic switches. Reliable 1G BiDi connectivity for our NAS setup.

169 Helpful vote Comments

D***z

Ecuador

Verified Purchase

5 .0

2025-12-19

Awesome 160km SMF transceiver module. Works flawlessly in our indoor aggregation racks.

76 Helpful vote Comments

N***a

Bangladesh

Verified Purchase

5 .0

2025-11-01

Spent almost three days looking for the items. Now I've got it! they are in new condition at a good price.

31 Helpful vote Comments

S***g

Venezuela

Verified Purchase

5 .0

2025-10-04

Easy install, instant 1.25Gbps link!

116 Helpful vote Comments

A***r

Kazakhstan

Verified Purchase

5 .0

2025-09-16

Upgraded our inter-city data center link using this 160km simplex LC module. Transmit and receive levels are super stable via SFF-8472 diagnostics. Incredible value compared to OEM optics.

66 Helpful vote Comments

R***n

Canada

Verified Purchase

5 .0

2025-09-03

You have guys are great.

96 Helpful vote Comments

W***m

Netherlands

Verified Purchase

5 .0

2025-08-19

Excellent, easy to use website with a search function that actually works!

47 Helpful vote Comments

S***r

Sweden

Verified Purchase

5 .0

2025-07-29

Great 1G BiDi SFP for enterprise access. DOM feature is super handy for monitoring.

81 Helpful vote Comments

M***s

Ecuador

Verified Purchase

5 .0

2025-07-18

Solid 1.25Gbps throughput over SMF.

133 Helpful vote Comments

M***a

United Kingdom

Verified Purchase

5 .0

2025-07-16

We deployed these for a critical telecom backhaul. Sensitivity at <-32dBm is incredible. Interoperates seamlessly with Juniper and HPE Aruba switches. The 0-70°C temp range is perfect indoors.

166 Helpful vote Comments

C***t

Dominican Republic

Verified Purchase

5 .0

2025-07-05

Pushed this LS-BL55491G-A6C to the limit on a 150km long-haul link. The DFB laser and DOM reporting are spot on. Seamless Cisco compatibility right out of the box!

219 Helpful vote Comments

S***t

Denmark

Verified Purchase

5 .0

2025-05-22

The price was good and the shipping time was perfect and the product is very good so all and all we are happy. Thank you.

80 Helpful vote Comments

B***s

Canada

Verified Purchase

5 .0

2025-05-15

Flawless 1550nm-TX/1490nm-RX performance, highly recommended.

103 Helpful vote Comments

K***a

Lebanon

Verified Purchase

5 .0

2025-04-29

Exactly what I ordered. Quality products. Arrived a day earlier than promised.

143 Helpful vote Comments

E***p

United States

Verified Purchase

5 .0

2025-03-21

The title says it all. The pricing was excellent compared to Pulse-genuine pricing on 10/25/40G Transceiver Modules. Delivery was Fast ! Very satisfied customer.

96 Helpful vote Comments

B***t

Japan

Verified Purchase

5 .0

2025-03-18

Good TX/RX power, fast install!

167 Helpful vote Comments

R***l

Russian Federation

Verified Purchase

5 .0

2025-03-16

Works perfectly on our campus fiber network!

121 Helpful vote Comments

M***n

Spain

Verified Purchase

5 .0

2025-03-05

Exactly as listed, Fast delivery.

23 Helpful vote Comments

S***n

Taiwan, Province of China

Verified Purchase

5 .0

2024-10-21

Excellent service delivery on time and very Fast and accurate.

54 Helpful vote Comments

h***o

United Kingdom

Verified Purchase

5 .0

2024-10-06

Looks good so far. Good product, fair price. Shipping was Fast enough (for what I paid for it).

84 Helpful vote Comments

C***a

Poland

Verified Purchase

5 .0

2024-07-16

Great service - exactly what I needed and very timely delivery.

49 Helpful vote Comments

E***s

Belarus

Verified Purchase

5 .0

2024-07-02

I received the item sooner than expected and it was exactly what it was supposed to be and was in the condition that it was supposed to be.

80 Helpful vote Comments

M***m

Spain

Verified Purchase

5 .0

2024-06-30

Fantastic, all my networking gears needs are from Link-PP!

31 Helpful vote Comments

J***s

United States

Verified Purchase

5 .0

2024-04-11

Good prices, need better selection.

65 Helpful vote Comments

R***n

Singapore

Verified Purchase

5 .0

2024-01-14

This 10/25/40G Transceiver Modules magnetics works as expected.

56 Helpful vote Comments

S***o

Italy

Verified Purchase

5 .0

2023-11-25

The shipping was Fast and packaging was good enough to protect the item.

51 Helpful vote Comments

B***y

United States

Verified Purchase

5 .0

2023-11-14

Satisfied, and product/shipment were as expected...thanks.

159 Helpful vote Comments

J***a

United States

Verified Purchase

5 .0

2023-10-20

They seem to have a wide compatible options, this one is highly compatible with my Juniper switch. Will try their Tyco next time.

82 Helpful vote Comments

S***a

Israel

Verified Purchase

5 .0

2023-10-17

I bought these 10/25/40G Transceiver Modules together with the recommended Lan Transformer. They help me select the right Polarity and show me their setup, and I received them very soon, much Faster than ever shopping. Nothing wrong with these items, they are built well and function well. Appreciate their efforts.

62 Helpful vote Comments

F***l

Canada

Verified Purchase

5 .0

2023-08-14

Very good online store to do business with. Competitive pricing. Great advice personally when needed. Fast processing and shipping. Still come back.

70 Helpful vote Comments

S***g

Italy

Verified Purchase

5 .0