

Fluke Networks FiberLert™ Detector
The Fluke Networks FiberLert™ Detector is a simple, non-contact fiber optic tester that detects live optical signals from 850 nm to 1625 nm in both single-mode and multimode fibers. With visual and audible indicators, it provides fast confirmation of activity without setup, reducing contamination risks and saving time in troubleshooting.
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Description
The Fluke Networks FiberLert™ Detector is an award-winning, pocket-sized tool designed to quickly verify fiber optic activity, polarity, and connectivity. By simply holding the detector near a fiber end face, patch cord, or port, the device instantly identifies live fibers using light and audible indicators—eliminating the need for setup or interpretation. Supporting single-mode, multimode, UPC, and APC connectors, the FiberLert™ provides wide versatility for data centers, telecom, and enterprise network technicians.
The non-contact detection method prevents contamination and protects fiber connectors from potential damage, ensuring reliable test results. The built-in LightBeat™ feature confirms the unit’s operation and battery status by flashing twice every two seconds, while an automatic power-off function conserves battery life. Powered by two AAA batteries (included), the device is rugged, lightweight, and comes with a convenient pocket clip for everyday carry. Backed by a two-year warranty, the FiberLert™ is a dependable and essential tool for fast fiber verification in the field.
Features
- Detects live fiber signals from 850 nm to 1625 nm (single-mode and multimode).
- Non-contact detection reduces contamination and prevents connector damage.
- Simple visual and audible alerts confirm active fibers instantly.
- Supports UPC and APC connectors as well as ports and patch cords.
- LightBeat™ feature indicates powered-on status and battery condition.
- Auto power-off after 5 minutes extends battery life.
- Compact and lightweight design with pocket clip for portability.
- Operates on 2 AAA batteries (included) with up to 1 year of typical life.
- Rugged, field-ready construction for reliable use in demanding environments.
- Backed by a 2-year warranty for added confidence.
Includes
- FiberLert™ Detector
- Instruction card
- 2 AAA batteries
