EASY TO USE: The Open Wire Detector With transmitter and receiver LEDs, you can quickly identify open or short circuit situations, making this tool extremely user-friendly. RELIABLE SHORT CIRCUIT VERIFICATION: The Electrical Circuit Tester Automotive verification of short circuits is made easy with this product. ADJUSTABLE PROBE LENGTH: The Short Circuit Finder is equipped with an adjustable 7" supple probe, providing flexibility to reach difficult areas. CONVENIENT SENDER FEATURES: The Electrical Circuit Tracer comes with red and black test leads cables and a tone/off/continuity switch, making it easy to use. With tone/continuity LEDs and a 61cm length, you can quickly identify wires and test continuity.