TRACETone Tone Generator And Amplifier Probe Kit, Battery: (4) LR44 Button Cells (6 V), Battery Life: Generator: 100 HR, Amplified Probe: 12 HR, Voltage Rating: 250 V Peak DC Or 175 V RMS AC Externally Applied Without Damage, Tone Frequencies: 995 HZ And 845 HZ Alternating Tones (Plus/Minus 5 PCT), Tone Voltage: 12 V p-p No Load, New Battery, Tone Power (600 OHM): 8 DBM, New Battery, Includes: Alligator Clip With RJ11 Interface, Satin RJ11 Patchcord, For Testing Continuity And Located Signal Of Installed Wire And Cable