Compact Wire & Cable Tracing Kit w/ Carrying Case The Triplett Fox & Hound Jr wire tracing kit consists of a versatile Fox Jr Tone Generator (Toner) and a compact Hound Jr Inductive Amplifier (Probe). The Fox Jr is a battery operated handheld multi-function Toner that generates a Warble tone, performs some basic telephone line tests (loop mA, line polarity, and ringing voltage), provides a visual and audible continuity test, and provides overload protection up to 120 VAC. The Hound Jr is a battery operated handheld lightweight Probe, with a thumb-wheel Sensitivity control and Signal Strength indicator LED. The Fox & Hound Jr are designed to work in various industrial and residential applications. Founded in 1904, U.S.-based Triplett Test Equipment continues to be on the leading edge of specialized testers. Whether supplying vital test equipment to the U.S. Signal Corps during WWII, or providing the railroad industry with essential testers to ensure the safety of their crews and the public, Triplett prides itself in developing innovative, reliable, and durable test equipment for every technician--that also won't break the bank.