The Fluke Networks Filtered probe provides clear and precise tracing of communication wiring and cabling. The tester probe’s innovative filter obstructs noise from external sources while listening to a tone through a cable. It obstructs the signal of 50Hz external interference. It has tone and trace wire testing on non-active networks. It has a speaker with loud audio output in noisy situations. These features will empower the users to solve the most complex service issues by easily verifying network components and cables that are connecting them.