The NF-8508 is an Optical Wire Meter Tracer for home and public facility network cable repair. Its main functions include Multi-Function Network Cable Testing such as cable fault testing, cable length measurement, PoE testing, port flash, Crystal head QC test function, optical power meter, and a visual fault locator function. It has two modes for options to track both cable digital and analog modes, all these make it a must-tool for cabling engineers.