The TEMPO Communications 801K Tone and Probe Kit comprises the 77HP/6A High Power Tone Generator and the 200FP Inductive Amplifier in a rugged woven polyester carrying case. The 801K represents the top-of-the range in wire and cable identification. When first turned on the 200FP is in the normal tone probe mode, detecting and playing most voice frequency signals. With a short press of the control button the probe enters the filtered mode, eliminating the hum and buzz created by light fixtures and power lines.

Patented – Patent #6946850