This is literally brand new. I bought this because I was incorrectly told I could trace my low voltage sprinkler wires from valve to box with it. I tried it, and as I now know, it wont. I put it back in its case. Costly error on my part, your win.

Description from Fluke:

Fluke Networks PRO3000F60-KIT Tone and Probe

Stop the Buzz. Find Cables Faster with Clear, Precise Toning

The Pro3000 toner’s patented SmartTone technology (with five different tones for exact pair identification) allows the technician to identify individual pairs. The tone generator is also capable of sending tone up to 10 miles (16 kilometers) on most cables! The angled-bed-of-nails clips allow easy access to individual wires, and the RJ-11 connector is ideal for use on telephone jacks. Attach the nylon pouch to your belt, and you will be equipped for any wire identification job.

~$250 from Fluke, ~$200 from Amazon