The FiberLert™ Live Fiber Detector lets you quickly check fiber activity, polarity on active cables, and connectivity. This pocket-sized tool checks single-mode, multimode UPC and APC patch cords and ports.

Quickly check fiber activity, polarity, and connectivity. Just place in front of the fiber end face or port and a light and tone indicate an active fiber (850 nm to 1625 nm) - no setup or interpretation required. This pocket-sized tool tests single-mode, multimode, UPC and APC patch cords and ports with a non-contact / non-contaminating detector. The LightBeat™ feature flashes the LED, indicating a powered-on condition and good battery and a timer shuts FiberLert™ off after five minutes of inactivity to extend battery life (2xAAA, included). Rugged design includes a convenient pocket clip and is backed by a two-year warranty.

Detects optical power in single-mode and multimode fiber wavelengths (near infrared range 850 to 1625 nm)

No setup or interpretation needed – light and sound indicate presence of optical signal

“Non-contact” detector reduces the risk of contamination and damage; suitable for ports and patch cords, SM, MM, UPC and APC connections

LightBeat™ flashes to indicate operation and battery status; powers off after five minutes to preserve battery (2xAAA, included)