Multiple protections: IEC CAT III 1000V, CAT IV 600V. Passed RoHS, CE certification. Equipped with two ceramic fuses and circuit protection thermistors to protect the multimeter from burns. High voltage protection is active on all ranges. Double insulation: insulated body and protective silicone sleeve to protect the instrument from damage caused by dropping or electric shock. WIDE APPLICATIONS: Test basic electrical problems of cars or home appliances, suitable for circuits, individuals, hobbyists, electricians and professional technicians. It can be used in household sockets, distribution boxes, fuses, cables, general batteries, car batteries and charging systems, car circuits, etc. Easy to use: Select the function you want to test (make sure 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 places. Multifunction: It can measure AC and DC voltage, DC current, resistance, diode, HFE, continuity and square wave output. Technical specifications of the product: DC voltage: 200m-2000m-20-200-500V 0.5% AC voltage: 200-500 V 1.0% Continuous current: 200u-2000u-20m-200m-5A 1.8% Resistance : 200-2000-20K-200K-2000K 1.0% General product specifications: LCD screen size (3 1/2 digital LCD screen, maximum display value 1999) Low voltage symbol display: yes Protection against overload: Yes Diode detection: yes, shows approximate voltage drop Triode detection: Yes Power supply: 9V battery Product size: 126 x 70 x 26mm Weight: about 108g Packing method: color box Standard configuration : bare watch (with battery inside), color case, test leads, manual