Fluke PRO3000 Tone and Probe Kit
Buy new: $66.99 / Used from: $66.00
Usually ships in 1-2 business days
I've used several network cabling sniffers over the years. The Fluke unit is by far more sensetive and capable than others I've used. It is fast and easy to use. Uses standard batteries - no need to look for special hearing aid type batteries, simple 9 Volt batteries. having used others in the past, this one struck me with its sensitivity, able to locate wires in wall cavities, seperate leads from with in pairs easily.
Fluke PRO3000 Tone and Probe Kit