【Smart Auto-Identification Test】 Automatically identifies voltage, resistance, and positive/negative poles of tested components. One-click battery voltage test, you can quickly grasp the battery health status without complicated operations. 【All-in-One Diagnostic Functions】 Integrates 10+ core test functions: multimeter, oscilloscope, relay test, diode test, injector testing, component activation, circuit breaker protection, etc. One-stop solution for automotive electrical system diagnosis. 【Accurate Fault Locating & Pathfinding】 Built-in C-Tracer function for intelligent pathfinding and computing, helps you quickly locate short circuits, broken wires and bad ground contacts, greatly improving auto repair efficiency. 【Upgraded V5.0 System & Free Update】 Equipped with the upgraded V5.0 intelligent operating system, smarter and easier to operate. Supports lifetime free system updates, ensuring you always have the latest functions and optimized performance. 【Wide 9-30V Compatibility】 Works with all 9-30V automotive electrical systems, fits 12V/24V cars, SUVs, trucks, motorcycles, RVs, boats, tractors and buses. Perfect for both professional auto mechanics and DIY vehicle owners.