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Pre-Term Fiber Assemblies
MTP Trunk Assemblies
MTP Fanout Cables
MTP Cassettes
Fiber Optic Enclosures
Fiber Optic Patch Cables
Ethernet Patch Cables
Ethernet Cable Bundles
Unterminated Fiber By The Foot
Network Configurator™
Use LANShack’s state of the art network designer tool to completely build your network from scratch.
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Pre-Term Fiber Assemblies
MTP Trunk Assemblies
MTP Fanout Cables
MTP Cassettes
Fiber Optic Enclosures
Fiber Optic Patch Cables
Ethernet Patch Cables
Ethernet Cable Bundles
Unterminated Fiber By The Foot
PCVFL (Precision Coupled Visual Fault Locator)
The PCVFL is a light-weight, hand-held tool used to quickly troubleshoot faults in the continuity of both single mode and multi-mode fibers, especially at fiber launch points or in OTDR dead zones. A high intensity visible red laser beam is precision-coupled into the optical fiber; breaks and micro-bends in the fiber deflect the red light into the fiber jacket, producing a red glow at the point of the fault.
Key Specifications
- Visual Range up to 5 km (3.1 miles) in both multimode and singlemode fibers
- Optical Output: 0dBm red laser
- CW Mode - 15 hours use on one 9v battery
- Pulsed Mode - 120 hours use on one 9v battery - Pulsed at 6 Hz w/12.5% duty cycle
- Low battery indicator
- Handheld / Lightweight
- Typical battery life in CW mode is 15 hours, and the short 12.5% duty cycle in pulsed mode extends the battery life to 120 hours of continuous use
Unlike standard light pens, the PCVFL precision-coupled visual fault locator (VFL) is optimized for fiber optics. An optical ball lens placed near the laser output focuses the red laser light for optimum coupling into optical fibers (often most pen-style laser pointers do not have this feature), and special electronics prevent the red laser from burnout (a common problem with pen-style red laser pointers), increasing the life of the VFL.
The PCVFL ships standard with a 2.5mm universal connector port.
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Product Reviews (18)
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WHEELER ELECTRIC
Quick and thorough order completion - had exactly what we needed - right price and right on time!!!
GARG
First class product and service
Kathy E.
prompt service, quick shipping, all parts arrived in good condition
Bill Zantopulos
Very reliable supplier of products. #1 in my book!
Peter Ruiz
Awesome Service
Don’t Just Take Our Word For It
Feb 10, 2026
Great products
Best RJ45 crimpers!
Dave
Dec 23, 2025
Excellent company with great speed
Excellent company with great speed, accuracy of products provided and very easy to work with in my experience.
Cline Electric
Mar 30, 2026
Product was as ordered and delivered in…
Product was as ordered and delivered in a timely manner. Worked perfectly. Will use again in the future.
Brian Rich
Dec 23, 2025
The product was exactly as ordered
The product was exactly as ordered. The only criticism would be a real-time line on shipping and expected delivery.
D. L.
Nov 25, 2025
Product was as advertised
Product was as advertised. Shipping was on timeJohn Olson
JO
Jan 07, 2026
Great company great items
Great company great items
Joseph Leone
Dec 09, 2025
Great team.
Open and clear lead times which they met or exceeded expectations. Quality product.
JC
May 05, 2026
Superior product/ Superior service
It was particularly useful to me that I was updated regularly about the status of my orders. The products that I purchased were superaltive in every way and exceeded my expectations...
Dr. Craig Smestad
Apr 08, 2026
everything worked as expected
everything worked as expected. Nice pull sock set up.
customer
Dec 30, 2025
Quick shipment
Quick shipment. custom quality cable!
Irwin Spector
Apr 17, 2026
Great prices ++
Great prices, quality and delivery speed
thanks
george
George
Apr 14, 2026
Great Custom Cables
Great product, exactly what I needed and fairly quick shipping considering they are custom cables! Will definitely be ordering more.
Matt S
Feb 25, 2026
fast service and excellent product
fast service and excellent product
JC STRAND
Feb 17, 2026
LANshack: Best custom CAT8 ethernet cable on the market!
I needed a custom 55 foot S/FTP (Shielded Foiled Twisted Pair) CAT8 indoor ethernet cable for ethernet backhaul between two Eero mesh routers. I did tons of research (including Grok) and I came across LANshack.com. They have the thickest 23AWG wire in their custom CAT8 cable vs 26AWG on Amazon (lower number is thicker; 23AWG wire has roughly twice the cross-sectional area of 26AWG). Excellent price per foot, and this cable is thick! Very quick turnaround once you order from them. I am very pleased with LANshack and I will order from them again for future projects!
Daniel T.
Apr 02, 2026
Easily ordered exactly what I needed
Easily ordered exactly what I needed. Once I got a shipping label item was delivered quickly and was packaged nicely. Would order from here again.
customer
Apr 15, 2026
Great Customer Service and received the…
Great Customer Service and received the product faster than expected.
customer
May 07, 2026
Products were available and ready to…
Products were available and ready to ship quickly. Products worked as they were supposed too.
Robert Butler
Apr 04, 2026
They do what they say
They do what they say. No BS
gavin714
Feb 27, 2026
LANshack is the BEST!
Online ordering process was quick and easy. We are a non-profit organization and the LANshack team made the tax exemption process quick and easy. Fast shipping is especially appreciated! Thanks so much!
Non-Profit Customer
May 30, 2026
Excellent Customer Service and Resolution
Tom personally reached out to me, took ownership of the situation, and worked to get my order resolved. He communicated with me directly, ensured the order was shipped, refunded the shipping charges, and provided a discount for the inconvenience.
What stands out most is the level of customer service and accountability shown throughout the process. It is refreshing to see a company stand behind its customers and make things right when an issue occurs.
I received my cable, the issue has been resolved, and I appreciate the effort Tom and his team put into correcting the situation. Based on how this was handled, I would not hesitate to do business with LANshack again.
Thank you, Tom, for your professionalism and commitment to customer service.
Lstargel
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