Aomaso Digital Multimeter Auto Ranging for Voltage, Current, Resistance, Capacitance, Frequency, Temperature and Non-Contact Voltage Detect Purpose: Aomaso Multimeter is particularly designed for electricians, home and automotive uses, perfect for electronic projects. Accurately measure voltage, current, resistance, capacitance, temperature, frequency, and duty cycle. Design: Auto ranging with large TRMS (TRUE ROOT-MEAN-SQUARE) digital display reading up to xxxx counts. Features a handy RELATIVE MEASUREMENT function, Max/Min display, and data hold function as well as AC electric field detection function(NCV function) Accuracyaccurate to 0.5% of reading. Microamp (600uA, 6000uA), Milliamp (60mA,600mA), and Amp (6A,10A) current ranges. SMALL BURDEN VOLTAGE in uA and mA current ranges for better accuracy: shunt resistance of 100Ohms for uA ranges and 1 Ohm for mA ranges. Performance: FAST RESPONSE and QUICK POWER UP.BRIGHT BACKLIGHT (15 seconds.) Auto-power off after 15 minutes (can be disabled by user.) Safety and Security: IEC 61010-1 CAT II 600V. Protective rubber sleeve for drop protection; Over load protection; Built-in support stand for hand free use