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Fiber Checker Pro (VFL) RoHS Compliant with 2.5mm to 1.25mm Adapter

Fiber Checker Pro (VFL)
Fiber Checker Pro (VFL)
Item #: TL4-4402
Availability: In Stock
Ships Within 1-3 Business Days
Price: $166.99

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The fiber cable shown is NOT included.

This fiber optic cable tester comes with the optional 2.5mm to 1.25mm adapter.

Fiber Checker Pro with Adapter

The TL4-4402 Fiber Checker Pro is used for checking the defects of a fiber cable. It sends a visible 650nm wave length red laser light through a fiber optic cable, the breaks or faults in the fiber will refract the light, creating a bright glow around the faulty area.

The universal connector can be used for the most common fiber interfaces such as ST/SC/FC/FDDA. It is suitable to test both single mode and multimode cables. With an optional 2.5mm to 1.25mm adapter, users can even test for 1.25mm fiber cables. The visibility is up to 5 kilometers.

There is also specially designed power circuit included; it provides steady power which avoids unstable laser output when the battery is low.

The output signal can be switched between CW or Pulse mode to get different visual effects. There is a dust proof cover which will prevent dust from getting into the inside of the interface. The cover also helps avoid incidental exposure of the laser to your eye.


  • Wavelength: 650nm
  • Range: visibility up to 5Km
  • Easy to check fiber faults with visual red laser light
  • Universally Connector for test different ST, SC, FC, FDDA interfaces
  • Test for both single-mode and multi-mode cables with optional 2.5mm fiber optic connectors to 1.25mm adapter
  • Highly effective power circuits allow for stable laser power
  • Operates in both CW (Continuous wave) & pulse mode
  • Dust-proof design keeps fiber connectors clean
  • Two AAA-size alkaline batteries provide 15 hours of stable continous operation
  • LED indocator for Power, Battery low, and CW/Pulse indicators


Laser Class
650nm ± 10nm @ 25°C
Spectral Width
Output Power
>0.6mW @ 25°C into 9um fiber
Battery type
2 x Alkaline AAA 1.5V
Power / Low Battery
Output Power Reliable
±0.2 mWC
Visability to 3km
Operating Temperature
0°C ~ 50°C
Storage Temperature
0°C ~ 70°C

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