Features: Multiple Functions Digital Tester: it can measure DC/AC voltage, resistance, capacitance, frequency, continuity and diode, live wire detecting, phase sequence detection. Smart(Auto) Measurement: DC/AC voltage, resistance, continuity can be measured, and the meter can automatically identify the measurement signal. User-friendly Data Checking: 1.3-inch LCD display screen, signal intensity indicator bargraph, it also has data hold function for freezing the measured data for easily viewing. Low Power Consumption: powered by 2pcs AAA batteries, with 15 minutes auto power off function to save power. LED Illumination: built-in LED light for illuminating in the dark working spaces. Safety Operation: it conforms to IEC61010-1 CAT.III 600V overvoltage safety standard and pollution level 2. Compact Portable Size: pen type digital multimeter is lightweight and small size, very convenient to carry. Specifications: DC Voltage: 4V/40V/400V/600V AC Voltage: 4V/40V/400V/600V Resistance: 4000/ 40k/400k/4M/40M Capacitance: 40nF/400nF/4uF/40uF/400uF/4mF Frequency: 40Hz/400Hz/4kHz/40kHz/400kHz/4MHz Material: ABS Display: 4000 counts Sampling Rate: Approx. 3 times/second Over Range Indication: "OL" Temperature Coefficient: 0.1 x accuracy/(28) Using Environment Condition: CAT.III 600V, pollution level 2, altitude