Pro3000F Filtered Probe with Tone Generator Kit, 60 Hz . Features innovative filter technology that obstructs signal interferences of 60 Hz to make tracking your cable easy. Offers one-button operation that allows you to switch between filtered and unfiltered modes, as well as a loudspeaker for use in noisy locations and for tracing cable through drywall, wood and other enclosures. Includes tone generator with SmartTone™ capability.