Fluke Networks Analog Tone and Probe Kit Specialty Meter Unknown-Volt Model #26000900 The pro3000 analog tone and probe is your best choice for toning and tracing wire on non-active networks, and specifically for identifying individual pairs with smart tone technology. Angled bed-of-nails clips allow easy access to individual wires, and the RJ-11 connector is ideal for use on telephone jacks. The large loud speaker on the network probe allows you to hear through drywall, wood or other enclosures to find wires quickly and easily. Tone and trace wire on non-active networks smart tone technology provides five distinct tones for exact pair identification Sends loud tone up to 10 miles (16 kilometers) on most cables Loud speaker on probe makes the tone easier to hear through drywall, wood, and other enclosures Angled bed-of-nails clips allow easy access to individual pairs RJ-11 connector is ideal for use on telephone jacks, attach nylon pouch (included in kit) to your belt for easy transport