1. [Automotive Circuit Tester]This Cable Tracker Electrical tool is specifically designed for detecting and tracing wires or cables without damaging insulation. You can quickly and easily Locate short circuits, open connections, broken wires, current leaks and even trace wires. 2. [Versatile Troubleshooting]The Cable Tracker Electrical comes with red and black test leads cables and a tone/off/continuity switch, making it easy to use. The Universal Wire Breaker Tracer Analyzer operates on 6 - 42V DC circuits, making it suitable for various applications in automobiles, trucks, and boats. You can easily identify whether there is a short circuit or not. 3. []Circuit Breaker Finder, simply connect the transmitter in series with the test circuit or wire, and scan the circuit or wire with the tracer flexible probe to quickly find the fault point and simplify the circuit troubleshooting process. The Short Circuit Finder is equipped with an adjustable 7' supple probe, providing flexibility to reach difficult areas. 4. [Intelligent Design]Automotive Electrical Open&Short Finder Circuit Tester, powered by 2pcs9V Batteries. It detects and alerts you immediately where a circuit is open. Made of sturdy ABS material With anti - surge and overload protection technology, the operating voltage is strictly controlled below 42V.