
Wire Tracer/Tone Generator
The Extech TG20 Wire Tracer/Tone Generator # TG20 is manufactured by Extech. Valley Instrument Service is an authorized Extech dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.
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The Extech 40180 is a Tone Generator and Amplifier Probe Kit. This heavy-duty kit with audible tone easily identifies wires or cables. The insulated inductive probe tip prevents shorting conductors. Featuring a wire trace, continuity test, clear/busy/ringing line test, and tip or ring identification. Includes alligator clips, RJ45 and RJ11 modular connectors, 9 V battery, and a case.

The CT20 is an electronic tool for electricians, alarm, cable installers and others who routinely need to check circuits for continuity and also identify cables and wires. It allows a single user to quickly identify and label two wires even when the wire ends are located in different rooms. It can accommodate test wire lengths up to 10,000-feet (3,000 meters), 26-gauge minimum. The CT20’s Remote Continuity mode allows the user to check continuity and to identify two or more cables/wires simultaneously.

This autoranging megohmmeter measures insulation resistance up to 2000MΩ. Choice of 250,500 or 1000VDC test voltages. The large backlit dual display indicates test voltage output and insulation resistance. Low resistance, continuity and AC/DC voltage measurement functions. Other features include automatic discharge at the end of test, protective holster with stand, power lock on feature and data hold. Complete with test leads, carrying case and 6 AA batteries.

The Extech 380320 is an Analog Insulation Tester with a large, easy to read analog display. It features a live circuit warning which displays the actual AC voltage measurement. It also includes an automatic discharge circuit, lock power on feature for extended test times, and insulation resistance up to 400 MΩ. Complete with heavy duty test leads, alligator clip test lead, 6 AA batteries, hanging strap, and hard carrying case.