Multiple Protections: IEC CAT III 1000V, CAT IV 600V. RoHS and CE certified. Equipped with two ceramic fuses and circuit protection thermistors to protect the multimeter from burnout. High-voltage protection is active across all ranges. Double insulation: insulated body and silicone protective sleeve to protect the instrument from damage caused by drops or electric shocks. 【WIDE APPLICATIONS】: Test basic electrical problems in cars or household appliances. Suitable for circuits, individuals, hobbyists, electricians, and professional technicians. It can be used with household outlets, distribution boxes, fuses, cables, general batteries, car batteries and charging systems, car circuits, etc. Easy to Use: Select the function you want to test (ensure the rotary switch is set to the correct test range) and connect the test leads. Data hold function for quick readings and backlight for clear testing in dark areas. Multifunctional: It can measure AC and DC voltage, DC current, resistance,