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.
| Power supply | 9 Volt Battery |
| Beeper | 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. |
| Wire Verification Distance | 10,000 ft., 3,000 m (26 Gage min.) |
| Fuse | 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) |
| Dimensions | 90 x 57 x 29mm (3.6 x 2.2 x 1.14") |
| Weight | 260g (9.2oz) |
