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Ideal for electricians, alarm, cable installers and others who routinely need to check circuits for continuity and also identify cables and wires, the Extech CT20 Continuity Tester Pro enables you to quickly identify and label wires even when the wire ends are located in different rooms. With use of the remote probe, the CT20 won't tie-up two people when identifying and labeling long distance wire/cable runs. The CT20 can tests wire lengths up to 10,000 feet in length (3,000 meters).
The CT20 drives a 20mA DC current pulse through the wires or cables under test to the bi-color remote probe, allowing technicians to identify each of the wires under test at the other end of the cable run and eliminates the possibility of false high impedance readings. The flashing remote probe features two lead, bi-color (red/green) LEDs, enabling you to identify up to three wires or cables at a time for correct labeling with only one trip to the other end location, cutting down on multiple trips back and forth.
The CT20 measures 3.6 x 2.4 x 1.14 inches (HxWxD), weighs 9.2 ounces, and is powered by a 9-volt battery. It's backed by a one-year limited warranty.
CT20 Continuity Tester Pro, remote probe, test leads with alligator clips, 9-volt battery, carrying case, and operating instructions
Bright flashing LED and loud pulsating beeper indicate local continuity (view larger).
excellent for cable tracing. It save time, and effort and money.Published 1 month ago by MANUEL F. PEDRAJA
Love it.. I have used it up to 700 feet and still I get a readingPublished 3 months ago by Jose Roman
It is a simple tool - the old 9v battery + light bulb solution to continuity testing - the battery clips on one end of the circuit (so you need 2 conductors to use this) and the... Read morePublished 3 months ago by Thomas S.