The Triplett/ByteBrothers CTX590 ProTone Wire Locator Kit features a powerful tone generator and a filtered, ultra-bright lighted probe. The CTX590 functions as a high quality wire locating tool that uses an inductive probe to sense a tone placed on the wires by its associated tone generator. The tone generator provides RJ11, RJ45 and insulated alligator clip connections. The Red/Green LED on the probe indicates continuity, voltage, and polarity. The probe also includes an ultra bright LED tip, fluorescent light noise filter and volume control. The CTX590 can be used for tracking down short circuits, telephone central office connections, and other wire locating applications.