Handheld test & measurement instruments — humidity, temperature, water quality, power, and more
3 products across 3 product families

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.

Wire Tracer/Tone Generator
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