Breakthrough digital and analog cable tracing finds cables other toners/probes can t. Rejects noise and effectively locates cables on active networks. Simplifies signal interpretation with audio and LED indicators. Rejects noise and false signals using IntelliTone digital signal technology. Locates hard-to-find cables, even on active networks. Speeds cable isolation with thumbwheel controlled sensing modes. Simplifies signal interpretation with smart audio and LED signal indicators. Verifies twisted-pair installation with visual end-to-end cable wire map