**Product Description: Versatile Automobile Circuit Tester** - **Practical Repair Tools**: This automobile circuit tester is an essential auxiliary tool designed to assist in the maintenance and inspection of automobile electrical systems and wiring. Its practicality makes it a valuable asset for both professional mechanics and DIY enthusiasts. - **Multifunction**: This versatile tester can perform a wide range of functions, including testing battery voltage values, determining voltage polarity, checking conductivity, inspecting lamps and motors, tracking and locating short circuits, and diagnosing poor grounding contacts and other electrical faults. - **Advantage**: Equipped with front lighting and a clear voltage value display, this tool offers voltage polarity testing and polarity output. It also features overload protection and includes a 4.5-meter long test line, providing flexibility and safety during use. - **Easy Operation**: The circuit tester comes with a clear and easy-to-understand operation manual, making it simple to use even without professional knowledge. This user-friendly design ensures that anyone can quickly master the method of operation. - **Widely Applicable**: Supporting all 6‑24V electrical system testing, this power circuit probe tester is widely applicable across various vehicles, including cars, pickups, SUVs, motorcycles, engineering vehicles, and boats. Its broad compatibility makes it an indispensable tool for comprehensive vehicle diagnostics and maintenance. Enhance your automotive toolkit with this multifunctional automobile circuit tester. Its practicality, ease of use, and wide applicability make it an essential tool for ensuring the optimal performance and reliability of vehicle electrical systems.