This instrument is designed to identify and trace wires or cables without damaging the insulation; you can also use it in checking for short circuit and locating open circuit and so on. In addition; it can also be used to identify some states of telephone.Designed for use with telephone lines; alarm cables; computer cables; intercom lines; speaker wires; and thermostat wiring Scanning Function - Find out working wire (network cables; phone lines; coaxial cable; buried cable and even cable behind wall) Cable Tester Function - Check the working state of each wire.
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