Extech products are high-quality handheld test, measurement and inspection tools. These are tools that help prevent, identify and solve problems, whether it's electrical, mechanical or maintenance. Rugged handheld testers, gauges and thermometers are put to the test every day by professionals, tradesmen and DIY enthusiasts. Extech is the pursuit of excellence in technology. No more laborious searching for the right cable. The CT-20 tester also has a remote terminal that allows you to identify cables, even if they are in a different room. The device is used to test the continuity of circuits and determine polarity. Of course, the CT-20 can be used just like a classic wire continuity tester. Indications on the CT are signaled acoustically and optically, and on the remote terminal - by a two-color LED. The Profi tester is robust and ideal for harsh operating conditions. The remote terminal is powered by the CT20. Specification - Simple wiring check - One person is enough to identify the wires Technical data - Maximum cable length: 3000 m - Dimensions: 90 x 57 x 27mm - Weight: 260g - Calibration: Factory (not certified) - Type (manufacturer type): CT20 - Suitable for: Cable identification, continuity checking, wire break detection - Power supply (details): 9 V block battery Kit includes - CT-20 - Remote terminal - 9V battery - Pouch for hanging on the belt - User manual