Quickly identify faulty fibre optic cables and ports using the pocket-sized Fluke Networks FibreLert Live Fibre Detector.
Ready to use straight from the box, the Fluke Networks FibreLert Live Fibre Detector is a non-contact fault finder. It can detect optical power in single-mode and multi-mode fibre wavelengths between 850 and 1625nm. Consequently, it is suitable for checking ports, patch cords, and single-mode, multi-mode, UPC, and APC connections. The Fluke Networks FibreLert Live Fibre Detector can also test transceivers.
To use the Fluke Networks FibreLert Live Fibre Detector, simply disconnect the suspected connection and place the Fluke Networks FibreLert Live Fibre Detector close to it. If the Fluke Networks FibreLert Live Fibre Detector detects light, it will beep and display a solid red light. This non-contact method of detection is not only quick and easy but also prevents contamination or damage.
Finally, the Fluke Networks FibreLert Live Fibre Detector is powered by 2x AAA batteries (included). It will power off after five minutes of inactivity to elongated the battery life. Dedicated LEDs indicate the Fluke Networks FibreLert Live Fibre Detector’s battery and operational status.
The Fluke Networks FibreLert Live Fibre Detector is a compact, convenient, cost-effective fibre optic fault finder.
Buy a qualifying Fluke Industrial, Fluke Networks or Beha-Amprobe product and earn 1 point for every £1 spent. Redeem points for rewards straight away or save for higher-value gifts.
Offer runs 1 September–31 December 2026. Claims are made through Fluke and offer works in conjuction with our other offers.
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| OPERATING PRINCIPLE | Senses near infrared light emitted from fiber optic cabling. A continuous red glow at the handle and an audible beeping noise (if not switched off) indicates the presence of near infrared light. |
| OPTICAL INTERFACE | Non-contact ceramic ferrule. Fits directly with 1.25 mm LC receptacles. Tethered ferrule adapter for testing 1.25 mm ferrule patchcord. Supports single-mode, multimode, UPC and APC connectors and ports. |
| WAVELENGTH DETECTION | 850 nm to 1625 nm |
| OPTICAL POWER DETECTION RANGE | +3 dBm to -30 dBm |
| LIGHT DETECTION | Visible steady red LED indicator when optical power is detected |
| LIGHTBEAT™ INDICATOR | Flashes twice every two seconds when unit is on and battery strength is sufficient. |
| BATTERY SAVER | Unit automatically turns off after five minutes of inactivity |
| BATTERIES | 2 AAA alkaline batteries included |
| BATTERY LIFE | Typically, greater than 1 year (5 hrs. of use a week) |
| ITEM SIZE | 2.87” x 1.42” x 10.27” / 7.4 x 3.6 x 26.1 cm |
| ITEM WEIGHT | 2.1 oz / 59 g |
| OPERATING TEMPERATURE RANGE | -10 °C to 50 °C |
| OPERATING HUMIDITY RANGES | 95 % (10 °C to 35 °C) Non-condensing 75 % (35 °C to 40 °C) Non-condensing uncontrolled < 10 °C |
| OPERATING ALTITUDE | ≤ 3000 meters |
| STORAGE TEMEPERATURE | -20 °C to 50 °C |