Tone & Probe Test and Trace Kit, Simple Tone Generator And Wire Tracing Probe For Non-Active Wire Runs, Responsive Probe With Durable, Non-Metallic, Conductive Tip, Alligator Clips For Unterminated Wires, RJ45 To RJ45 Test Cable, Toner And Probe Together Perform Pin To Pin Wire Map Test, Work Light On Probe Tip For Use In Dark Spaces, Adjustable Volume Control, AAA Batteries (Included), Replaceable Test Cables Available (Cat. No. VDV770-855), Headphone Jack For Noisy Environments (Headphones Sold Separately)