Product Description FTTX PON Optical Power Meter/Optical Multimeter With VFL KEY Features Designed to meet any FTTX application. Integrates the optical power meter and the visual fault locator. Reliable basic functions for the most economic test. The optical power meter can measure dBM,dB and uW in the wavelength band of 850,980,1300, 1310,1490,1550 and 1625nm. The Visual Fault Locator uses CW mode and Modulation mode and helps to detect the optical cable of up to 10 km