Live Wire Circuit Tracing Kit HotWire Fox Features - Generates Warble or Pulsed Tracing Tones with User Selectable Pitch - Audible Continuity Test with 120/220 VAC Line Cross Protection - TrueTrace positively identifies wires (when usable) - Also Generates AF Tracing Tones for use with Inductive Probes (like the Hound 3) - Magnetic Back - Battery Test LED - Battery Powered or AC Line Powered - Carrying Case included - Uses Common 9V Battery HotWire Hound Features - FET and IC Front End - Trace wires up to 1000ft in length - Adjustable Sensitivity - Powerful Loudspeaker - LED Signal Strength Indicator - Noise Filter - White LED Headlights - Auto-Muting Earphone Jack - Carrying Case included - Uses Common 9V Battery