【All-in-One Automotive Electrical Diagnostic Tool】 Covers 16+ core test functions: AC/DC voltage, resistance, frequency, duty cycle, diode test, continuity test, fuel injector signal detection, short circuit locating and ground detection. 【High-Precision Test & Real-Time Data Display】 Accurately detects 6-30V electrical systems with 0.1V voltage resolution. It reads real-time waveform signals, helping you quickly locate faults and improve repair efficiency. 【Flexible Component Activation Function】 Supports 3 activation modes: activate components in your hand, in the vehicle, or with ground. Easily test motors, lights, solenoids, relays without disassembling parts. 【Durable Build & Full Safety Protection】 Impact-resistant ABS shell for long-lasting use. Built-in smart circuit shield with overload, overheat and reverse connection protection, ensuring safe operation during auto repair. 【Wide Compatibility & Multi-Language Support】 Fits all 12V-24V vehicles: cars, trucks, ATVs, motorcycles, boats and more. Supports 9 global languages, covers 50+ brands and 10000+ models for mechanics and DIY users.