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CT20: Remote & Local Continuity Tester

One person operation for wire and cable testing

View Datasheet > CT20


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.

Additional information

Power supply

9 Volt Battery


85dB beeper

Battery life

Approx. 12 months with normal use.

Continuity confirmation

Equal to or less than 2.0 K Ohms

Continuity drive current:

Pulsed (2.0 Hz) 20 – 50mA at 10 Ohms and 2.0mA – 8.0mA at 1000 Ohms.


250V 0.5A fast blow

Operating Temperature

-12 to 45°C (10°F to 113°F)

Storage Temperature

-20 to 80°C (-4 to 176°F)

Operating Humidity

10 to 90% RH (non-condensing)


90 x 57 x 29mm (3.6 x 2.2 x 1.14")


260g (9.2oz)

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