This product is a professional-grade insulation tester designed for insulation resistance measurement of new energy vehicle high-voltage systems, including traction batteries, drive motors, and high-voltage wiring harnesses. It supports multiple test voltage outputs from 50V to 1000V, offering a wide measurement range with high accuracy. Equipped with a large LCD display, it provides real-time readings of insulation resistance values and leakage current. Built-in high-voltage discharge protection circuits and overload protection ensure operator and equipment safety. Ideal for insulation safety inspections at vehicle assembly plants, repair shops, and testing facilities.