FLS-190 - High-power visual fault locator (VFL)

This high-power pocket-sized VFL is an essential tool for any technician testing fiber over long distances.

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FLS-190 - High-power visual fault locator (VFL)

The FLS-190 is the easiest way to identify fibers from end to end, and to locate polished connector endfaces. Its red laser shines through most jacketed fibers to help you pinpoint breaks, bends, faulty connectors, splices and other causes of signal loss. With its 5mW output, it has a reach of up to 12 km (typically, depending on fiber attenuation and on ambient light conditions).

The FLS‑190 pinpoints faults visually by creating a bright red glow at the exact location of the fault on singlemode or multimode fibers. It can also be used to identify the port of a fiber in a patch panel. 

Compact design

With a streamlined, pocket-sized pen-style design, the FLS‑190 can easily be carried anywhere. This VFL comes with an anodized aluminium casing. This long-lasting and lightweight device is designed to be part of the essential toolkit for any fiber‑testing field technician.

Long lasting 

The FLS-190 high efficiency guarantees prolonged operation with two standard AA alkaline batteries, typically providing 30 hours of uninterrupted operation. It is also compatible with rechargeable batteries, reducing the need for single-use ones.

The FLS-190 offers an affordable solution for locating fibers and faults, making it a valuable—if not essential—tool for each and every fiber technician.

Key features

Output power: 5 mW

Range: 12 km

Bright red laser at 650 nm (safety class 3R)

Flashing and continuous operation modes

30 hours of operation (typical)

Standard AA alkaline batteries

Pocket-sized pen-style design

2.5 mm universal connector 

1.25 mm adapter available

Applications

Break and macrobend location

Fiber identification

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The FLS-190 high-power VFL: troubleshoot fiber faster - 中文 (2025年4月25日)
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FLS-190 high-power visual fault locator (VFL) - English (2025年4月29日)
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FLS-190 high-power visual fault locator (VFL) - Français (2025年4月29日)
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FLS-190 high-power visual fault locator (VFL) - Deutsch (2025年4月29日)

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