Professional series tone generator for wire tracing in common wiring systems. The Klein Tools Tone Cube Tone Generator lets you trace wire paths and identify cables in common wiring systems. The heavy-duty leads feature dual-modular plugs that connect to both RJ11 and RJ45 jacks. Can be used with other manufacturers' analog tone probes. Transmits five discrete tracing tones selectable by tone switch Tone powers off automatically after 1.5 hours Alligator clips for unterminated cable or coax Constant output level over useful battery life Single modular RJ12 plugs for direct connection to RJ11/RJ12 or RJ45 jacks