A professional multifunctional device for contactless identification and maintenance of optical lines. It combines an optical fiber identifier, an optical power meter (OPM), and a 10 mW visual fault locator (VFL). The device detects the direction and frequency of the signal and is suitable for single-mode and multimode fibers.

The 4-in-1 metal holder accommodates fibers and cables with diameters of 250 µm, 900 µm, 2 mm, and 3 mm. The color LCD display provides clear readings, and the OPM function supports wavelengths of 850, 1300, 1310, 1490, 1550, and 1625 nm. The VFL module operates at 650 nm with a minimum output power of 10 mW.