Can I hot-swap this transceiver while the switch line card is powered on and running traffic?

Yes, it is completely hot-pluggable according to standard SFP Multi-Source Agreement (MSA) rules. You can insert or remove it without rebooting your system.

Is the laser type used in this module a DFB or an FP laser, and what is its safety classification?

It utilizes a highly stable 1310nm FP laser transmitter and is certified as a Class 1 Eye Safety compliant laser component.

Can I plug this 155M SFP module into an uncooled outdoor enclosure in extreme winter climates?

Yes, this is a true industrial-grade transceiver rated to operate flawlessly from -40°C up to +85°C. It is fully hardened against severe temperature drops and outdoor thermal shifts.

What type of optical fiber cable do I need to achieve the full 40km transmission distance?

You must use standard 9/125µm Single Mode Fiber (SMF) OS1/OS2 cables terminated with a Simplex LC connector.

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LINK-PP LS-BL315501-40I 155M SFP BiDi 1310nm-TX/1550nm-RX 40km Simplex LC DOM SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-BL315501-40I 155M SFP BiDi 1310nm-TX/1550nm-RX 40km Simplex LC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 205573
Price: 7.74 USD
Availability: InStock
Rating: 4.9 (22 reviews)

# 205573

Product: LINK-PP LS-BL315501-40I 155M SFP BiDi 1310nm-TX/1550nm-RX 40km Simplex LC DOM SMF Optical Transceiver Module (Industrial)
SKU: 205573
P/N: LS-BL315501-40I
Price: $ 9
Stock: 320 in Stock
Sold: 1.8K
Product URL: https://www.l-p.com/products/494010.htm

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Compatible:: LINK-PP

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-BL315501-40I 155M SFP Specifications

LS-BL315501-40I functions as a single-fiber 155M SFP BiDi transceiver module capable of bridging 40km distances through a simplex LC connection at 1310nm-TX/1550nm-RX, fortified by real-time digital diagnostic monitoring for proactive system oversight.

LINK-PP Part Number	LS-BL315501-40I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1310nm-TX/1550nm-RX	Max Cable Distance	40km
Connector	Simplex LC	Media	SMF
Transmitter Type	FP	Receiver Type	PIN
TX Power	-8 to -1dBm	RX Power	-32 to -6dBm
Receiver Sensitivity	-32dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Can I hot-swap this transceiver while the switch line card is powered on and running traffic? By T***e on 2026-04-20

A: Yes, it is completely hot-pluggable according to standard SFP Multi-Source Agreement (MSA) rules. You can insert or remove it without rebooting your system. By admin on 2026-04-21
Q: Is the laser type used in this module a DFB or an FP laser, and what is its safety classification? By R***k on 2026-03-28

A: It utilizes a highly stable 1310nm FP laser transmitter and is certified as a Class 1 Eye Safety compliant laser component. By admin on 2026-03-29
Q: Can I plug this 155M SFP module into an uncooled outdoor enclosure in extreme winter climates? By S***e on 2025-10-12

A: Yes, this is a true industrial-grade transceiver rated to operate flawlessly from -40°C up to +85°C. It is fully hardened against severe temperature drops and outdoor thermal shifts. By admin on 2025-10-13
Q: What type of optical fiber cable do I need to achieve the full 40km transmission distance? By Q***n on 2025-05-27

A: You must use standard 9/125µm Single Mode Fiber (SMF) OS1/OS2 cables terminated with a Simplex LC connector. By admin on 2025-05-28

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N***e

United States

Verified Purchase

5 .0

2026-04-21

Excellent attenuation metrics on long-span single-mode fiber.

40 Helpful vote Comments

R***e

Malaysia

Verified Purchase

5 .0

2026-04-12

We are transitioning rural nodes to single-strand fiber. These 1310nm-TX/1550nm-RX modules saved us massive optical fiber lease costs. Pair them with the matching 1550TX/1310RX end and they match instantly. Great engineering.

136 Helpful vote Comments

P***l

Norway

Verified Purchase

5 .0

2026-03-22

Perfect for our rail signaling network deployment. Very durable.

66 Helpful vote Comments

Z***g

Lithuania

Verified Purchase

5 .0

2026-03-01

Our field crews love these simplex LC transceiver modules because they minimize troubleshooting time on single-core setups. No messing around with matching pairs incorrectly if you tag your 1310nm-TX and 1550nm-TX ends clearly. Top marks!

98 Helpful vote Comments

V***n

Maldives

Verified Purchase

5 .0

2026-02-17

Excellent packaging and quick tracking. The 1310nm-TX/1550nm-RX split works perfectly over our dark fiber network setup. Optical attenuation is well within safe thresholds even at the 38km mark. (^_^)

104 Helpful vote Comments

J***d

Romania

Verified Purchase

5 .0

2026-02-10

Saved half of our fiber lines using these BiDi SFP modules. Outstanding value!

67 Helpful vote Comments

T***l

United States

Verified Purchase

5 .0

2026-01-19

Our mountain tower site swings from -30°C to extremely hot summers. This true industrial-grade optical module has proven its worth over 3 months now. No dropped links or random reboots. Will buy again!

122 Helpful vote Comments

D***y

United States

Verified Purchase

4 .0

2026-01-11

The 155M BiDi SFP 40km module performs flawlessly out on our freezing tower cabinets down to -25°C. Link is solid, but the plastic dust cap on the simplex LC port was a bit tight to pull off with cold fingers. Minor detail, product itself is great.

32 Helpful vote Comments

L***x

Philippines

Verified Purchase

5 .0

2026-01-06

Deployed 25 of these BiDi SFP optical modules on tower backhauls last week. Solid links.

87 Helpful vote Comments

B***n

Republic of Korea

Verified Purchase

5 .0

2025-12-26

Operating an infrastructure network in harsh environments means our hardware must endure brutal seasonal weather drops. We selected this 1310nm/1550nm BiDi SFP for a critical single-mode fiber trunk line feeding a remote utility substation. Because single-strand fiber utilization was mandatory to maximize existing layouts, this simplex LC SMF optical module allowed us to double our capacity instantly without laying new physical cables. The SFP EEPROM is coded perfectly, preventing interface initialization lockouts. Despite ambient temperatures plunging way below freezing, the internal optical output remained rock solid with zero frame slips.

127 Helpful vote Comments

Q***l

Netherlands

Verified Purchase

5 .0

2025-12-15

Needed an industrial-grade 155M 40km SFP BiDi module for power substation telemetry. The LINK-PP LS-BL315501-40I worked beautifully inside our switches. Zero CRC issues under heavy electrical interference.

103 Helpful vote Comments

A***g

Cambodia

Verified Purchase

5 .0

2025-11-24

Our operations group purchased a batch of these industrial-grade BiDi SFP transceivers to address core fiber strand depletion across our regional backhaul aggregation loops. Operating at 155Mbps via Fast Ethernet protocols, these simplex LC modules match perfectly with the complementary wavelength configuration on the opposing termination points. In-lab testing via a bit error rate tester yielded a flawless performance score over a simulated long-reach single-mode fiber spool. In production, the wide-temperature certification was strictly verified by internal sensors recording high transceiver temperatures during peak summer load without any frequency drifting, proving its heavy-duty structural shielding.

143 Helpful vote Comments

K***n

Poland

Verified Purchase

5 .0

2025-11-08

Industrial-grade temperature handles our uncooled outdoor cabinet easily.

59 Helpful vote Comments

X***h

Morocco

Verified Purchase

5 .0

2025-10-29

Tested inside roadside traffic control boxes where temperatures hit 65°C ambient. The DOM data shows this 155M SFP internal temp handles it without laser degradation. Phenomenal thermal dissipation engineering!

124 Helpful vote Comments

S***n

Australia

Verified Purchase

5 .0

2025-09-24

Clean optical Tx eye diagram on the scope. For a 40km simplex LC single-mode optical module, the receiver sensitivity is top tier. Laser stays locked even during extreme daily temperature swings down under.

87 Helpful vote Comments

M***t

Bangladesh

Verified Purchase

5 .0

2025-08-30

No packet loss or CRC errors after 72 hours under full load stress test.

71 Helpful vote Comments

C***t

United Kingdom

Verified Purchase

5 .0

2025-08-09

Managing a metropolitan traffic camera and sensor network requires deploying hundreds of edge switches inside unconditioned roadside cabinets. We standardized on this 40km BiDi SFP module to aggregate 155Mbps data streams from remote road intersections back to our central monitoring headquarters. The simplex LC connector design allowed us to tap into existing single-strand fiber lines originally reserved for backup paths, effectively doubling our physical infrastructure capacity without excavation costs. The DOM tracking is highly accurate, enabling field crews to easily isolate dirty bulkhead connectors remotely via Rx loss metrics.

115 Helpful vote Comments

W***d

Macao

Verified Purchase

5 .0

2025-07-11

Our utility automation grid depends heavily on 155Mbps speeds for legacy protection relays. This industrial-grade SFP module matches original OEM specs at a fraction of the cost. Highly stable EEPROM coding.

86 Helpful vote Comments

O***r

Nepal

Verified Purchase

5 .0

2025-06-21

Tx/Rx levels are highly stable. Will order another batch for project Phase 2.

60 Helpful vote Comments

E***h

Japan

Verified Purchase

4 .0

2025-06-11

Excellent single-mode fiber transceiver with robust internal diplexer isolation. Works great on our 30km links. Shipping took 2 days longer to reach due to local weather rerouting. The LINK-PP support team was helpful in tracking it.

27 Helpful vote Comments

Y***d

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-05-04

Using these BiDi SFP optical modules to link remote monitoring cameras across our industrial complex. The 40km budget gives plenty of headroom for dirty patches or multi-splice fiber paths. Zero frame loss recorded.

82 Helpful vote Comments

U***n

Mexico

Verified Purchase

5 .0

2025-04-17

LINK-PP makes solid stuff. We use these for municipal video surveillance backhauls on a 35km single-mode fiber run. Simplex LC saves tons of physical infrastructure space. The transceiver was instantly recognized by our industrial switches.

75 Helpful vote Comments