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Electrical Tools - Continuity Testers

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Extech CT20

Remote & Local Continuity Tester

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.

Extech CT40

Cable Identifier/Tester Kit

This 16-Line cable identifier/tester kit allows users to remotely identify up to 16 local or installed lines, perform wire voltage checks from 5 to 16 VDC, and troubleshoot electrical or electronic circuits. With a CAT III-600V safety rating, the CT40 offers AC/DC Voltage and Current, Resistance, Diode, and Continuity multimeter functions. Comes complete with 16-line Transmitter, MultiMeter/ Receiver, two 9V batteries, pouch case, and 2 AAA batteries.

Extech ET40

Heavy Duty Continuity Tester

The Extech ET40 Heavy Duty Pen Style Continuity Testers are ideal for checking continuity of non-energized circuits, fuses, switches, relays and wiring. It comes with a 76.2 cm (30 in) test lead and an alligator clip.

Extech ET40B

Continuity Tester

The Extech ET40B is a compact size Continuity Tester with a built in, 73 mm (2.9 in), stainless steel probe. It is capable of detecting open circuits in fuses, diodes, switches, and wires. Comes with an insulated alligator clip and one AAA battery.