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Your cart is empty.New Karvinger rechargeable tester, a major asset for your fiber optic work. A rechargeable battery with 8 hours of battery life
Save time and avoid battery failure
Responsive customer supportBenefit from answers to your questions 7 days a week
Order without risk!Manufacturer's warranty free replacement during 1 year and 30-day money back
Features:- Materials: Aluminum
- Size: 14.5 x 2.7 x 2.7 cm
- Power: 30 mW
- Detectable length: 18,6 miles
- Autonomy: 8 hours
- Weight: 150 g
x1 Karvinger Fiber Optic Tester 30mW rechargeable
x1 Protective carbon fiber case
x1 Adjustable wrist strap
x1 USB charging cable
x1 FC to LC connector
x1 Instructions for use + warranty link
Instructions for use:- Charge the tester until the indicator turns blue.
- Remove the dust cap and connect the vfl to the fiber optic cable.
- Press the button once to activate the continuous mode. Press again to activate pulse mode. To turn off the vfl, press the button again
- Identify the places where the red light appears on the fiber optic cables: you have identified a fault!
Customer
Reviewed in the United States on May 19, 2025
Super bright!
BearBird Workshop
Reviewed in the United States on March 5, 2025
I ordered this Karvinger Visual Fault Locator after needing to do some fiber optic testing. The rechargeable battery system is a standout feature - I hate having to put in new batteries in electronics.The 30mW power provides excellent visibility for locating breaks and bad connections in fiber lines. The red light clearly shows through constraints and bends up to impressive distances. The aluminum housing has proven durable during field use, and the included FC to LC adapter saves having to purchase additional accessories.The protective carbon fiber case keeps everything organized and protected between jobs. For anyone working with fiber optic installations, this VFL tester simplifies troubleshooting and increases efficiency on site.
Nikki
Reviewed in the United States on March 27, 2025
The Karvinger fiber optic pen is a reliable tool for identifying faults in fiber installations. It effectively locates issues like breaks, bad connections, or macro bends, and the visible light reflection feature makes pinpointing defects straightforward. The "no battery worries" design is a bonusit’s always ready to go when you need it! While it’s not the most compact or user-friendly tool out there, it still gets the job done without much hassle. It’s a solid option for basic troubleshooting, offering good functionality and performance overall. If you’re in need of a dependable fiber optic tool, this one delivers!
JesBee
Reviewed in the United States on March 15, 2025
Really choice product here. The case it comes in is pretty study. It’s a bit harder and not just the cheap cordura-like bags. The foam protector is stuck in place so it won’t float around with repeated use anytime soon. The tool itself has a dust cover over the charging port that is permanently attached and actually goes back in when done. Charging is USB C. The dust cover for the laser is durable and rubbery and is well attached to the pen. One button press turns on the steady light, second button press gives you pulse light. The additional items are great and pack away in the bag’s zipper area. Also included is a wrist lanyard which I haven’t attached but seems pretty comfortable. Unlike others which are just as string or ribbon this is slightly stretchable soft material. The light functions as intended and works well. The tool is pretty lightweight as well but nothing here feels cheap.With the full kit you get and excellent cart case you can’t go wrong. If you’re looking for a VFL give this a strong consideration. You can toss it in your bag or tool kit with ease.
Mr_D
Reviewed in the United States on March 1, 2025
The threads on the end battery housing are really bad. Very rough, scratchy and very hard to turn.They will not last. It leaves metal chunks laying on the desk.The thread-on optical fitting is loose and access is blocked by the metal housing.Somehow they found the smallest rated 18650 cell rated at 1200mAH.That's 30-40% of the normal capacity and I've never seen one that low.It's like a $1 dollar store metal flashlight with a red laser on the end.It has one good point, the zipper on the case operates fine.
Justin C.
Reviewed in the United States on April 2, 2025
For network engineers navigating the often-unlabeled and tangled world of fiber optic cables, the Rechargeable Visual Fault Locator (VFL) 30mW 30km with Case emerges as an indispensable tool. Its practicality shines in office settings where tracing and testing fiber connections is a daily reality.Imagine the frustration of encountering unlabeled fiber cables left behind by previous technicians. This VFL cuts through the confusion, allowing for quick identification of cable endpoints. Its bright red light penetrates fiber, illuminating any bends, breaks, or connection issues, streamlining the troubleshooting process. This efficiency is invaluable when dealing with time-sensitive network maintenance.Beyond tracing, the VFL proves equally useful for quality assurance. Checking brand-new fiber cables for defects becomes a straightforward task, ensuring network integrity from the outset.The rechargeable nature of this VFL is a significant advantage. Ditching the constant need for AA batteries translates to cost savings and reduced environmental impact. The reported 8-hour battery life ensures that the VFL remains operational throughout a workday, minimizing downtime.The included FC male to LC female adapter expands the VFL's compatibility, accommodating various fiber optic connectors. This versatility is crucial in diverse network environments.In essence, this rechargeable VFL is a reliable and practical tool for network engineers. Its ability to trace and test fiber cables, coupled with its rechargeable design and long battery life, makes it an essential asset for maintaining and troubleshooting fiber optic networks. The convenience of not needing to replace batteries is a huge bonus.
J. Fisher
Reviewed in the United States on April 13, 2025
This tester is very bright and comes with a SC to LC adaptor. The case is really nice and has a place to hold the charger and adaptor. If you work with fiber this is a must have, and I love that it is rechargeable, and I don't have to keep replacing batteries.
Jacob Wexler
Reviewed in the United States on April 1, 2025
If you're one of the few people who needs a VFL like myself, you may have tried one of the endless clone 30mW lasers on Amazon. This is in a league of its own, and breaks from the clones in the best ways. It is sturdy, for starters, and it can balance on its "foot" if need be. The USB-C charging is a great feature, and allows the unit to never need unscrewing. The dust cap on a leash is much more reliable than a flimsy flip cap that'll fail you. But the best feature is the button. I've run through so many clones and the switch would always slip or get stuck. The button is crisp, there's no accidentally pressing it. Turn it on, it stays on. Lastly, it is BRIGHT. I actually believe the mW claim on this one. If you're in the market for a VFL, get this one.
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