Description: The digital multimeter is a powerful, dependable tool that safely measures AC/DC voltage, current, resistance, capacitance, and frequency, whether you are working around the house or for automotive maintenance. Safely tackle many electrical problems around your home with this powerful multimeter, and you don't have to be an electrician to use this multimeter. Features: Designed to safely and accurately troubleshoot a variety of automotive and household electrical problems. The multimeter uses 2 pieces 1.5V AAA batteries(not included)as power supply and support auto power off function to save power. Its large 4 digit(9,999)display provides accurate, easy-to-read results that enable you to complete your work quickly and efficiently. Voltage testing function can test both AC and DC voltage and designed with protection circuit for high voltage. Supports continuity testing, resistance testing, diode testing. Specifications: Function Range Resolution Accuracy MAX. Value Other DC Voltage (V) 999.9mV 0.1mV ±(0.5%+3) 999.9V 9.999V 0.001V 99.99V 0.01V 999.9V 0.1V DC Voltage (mV) 9.999mV 0.001mV 99.99mV 99.99mV 0.01mV AC Voltage (V) 999.9mV 0.1mV ±(1.0%+3) 750V 40Hz-1kHz 9.999V 0.001V 99.99V 0.01V 750.0V 0.1V AC Voltage (mV) 9.999mV 0.001mV 99.99mV 99.99mV 0.01mV DC Current (mA&A) 999.9mA 0.1mA ±(1.0%+3) 9.999A 9.999A 0.001A DC Current (uA) 99.99uA 0.01uA ±(0.8%+3) 999.9uA 999.9uA 0.1mA AC Current (mA&A) 999.9mA 0.1mA ±(1.2%+3) 9.999A 40Hz-1kHz 9.999A 0.001A AC Current (uA) 99.99uA 0.01uA ±(1.0%+3) 999.9uA 999.9uA 0.1uA Resistance 99.99Ω 0.01Ω ±(1.0%+3) 9.999MΩ 999.9Ω 0.1Ω ±(0.5%+3) 9.999kΩ 0.001kΩ 99.99kΩ 0.01kΩ 999.9kΩ 0.1kΩ 9.999MΩ 0.001MΩ ±(1.5%+3) Capacitance 9.999nF 0.001nF ±(5.0%+20) 9.999mF 99.99nF 0.01nF 999.9nF 0.1nF 9.999uF 0.001uF ±(2.0%+5) 99.99uF 0.01uF 999.9uF 0.1uF 9.999mF 0.001mF ±(5.0%+5) Frequency 99.99Hz 0.01Hz ±(0.1%+2) 9.999MHz 999.9Hz 0.1Hz 9.999kHz 0.001kHz 99.99kHz 0.01kHz 999.9kHz 0.1kHz 9.999MHz 0.001MHz Duty Cycle 1%~99% 0.1% ±(0.1%+2) Diode Yes Continuity Yes Square Wave Output 50Hz/100Hz/200Hz/300Hz/400Hz/500Hz/600Hz/700Hz/800Hz/900Hz/1000Hz/2000Hz/3000Hz/4000Hz/5000Hz Display (LCD) 9999 Counts Ranging Auto/Manual Material ABS Update Rate 3Times/Second Ture RMS Yes Back Light Yes Data Hold Yes Low Battery Indication Yes Auto Power Off Yes Battery Type 1.5V AAA Batteries * 2 (NOT included ) Operating Temperature 0~40℃ Humidity