BK 262 Cable Tracer Kit Tone Generator and handheld line tracer. The Tone Generator is a hand-held. Battery-powered instrument designed to perform a variety of tests on un-energized telephone lines or LAN cables. Alligator clips and a standard RJ11 plug allow the tone generator to be connected to stripped wires. Terminal panels. Wall plates. Or modular single line jacks. Generates Warbled Tone with selectable test frequencies LED indicates continuity when in CONTINUITY mode LED indicates positive polarity when in POLARITY mode Provides talk current on a dead line. Check line polarity Dimensions: (H x W x D): 7 x 1.87 x 1.12 (177.8 x 47.5 x 28.4 mm). Weight: 5.8 oz. (164.4 g) Power: Standard 9-volt battery. One year warranty