Permits technicians to identify the conductor within a bundle; at a cross-connect point or at the remote end. Can be used on twisted pair wiring (telecom; datacom; etc.); single conductors; coaxial cables; de-energized AC wiring and most other wiring. Selectable Warble Tone; Continuity Testing; Polarity Testing; Talk Battery Supply; Two-line Modular Test Lead (RJ-11); Three-color LED (identifies AC ring voltage); Weather-resistant Design; Battery Operated (9V not included)