Psiber CT12 CableTracker 12 Tone Generator Ultra-High Power is the most powerful tone generator on the market with up to 10 times the power of standard generators. The Psiber CT12 generates a signal that can be detected miles away, can be heard through walls, ceilings and enclosures, works with many types of twisted pair wiring including some shielded cabling, and rapidly alternates between two frequencies for easier location.