Features: Full Function Multimeter: the professional multimeter has various useful functions for measuring DC/AC voltage, DC/AC current, resistance, capacitance, frequency/duty, temperature, and diode test, continuity test, non-contact AC voltage detection, live wire detecting. Temperature Measurement: -40~1000/-40~1832 wide test range, use the included K-type thermocouple probe to test the temperature of the target object, / unit switchable. Smart(AUTO) Measurement: this measurement mode is default when power on. In this mode, DC/AC voltage, resistance, continuity can be measured, and the meter can automatically identify the measurement signal. Max/Min & Relative Value Measurement: under the manual range mode, it can measure the maximum and minimum value(invalid in capacitance, frequency/duty cycle, temperature, NCV/live gear), and relative value(invalid in continuity, frequency/duty cycle, temperature, NCV/live). Flashlight & Data Hold: auxiliary light up the working areas under the low lit conditions, and you can press the data hold button to keep the measured value unchanged to write it down leisured. Low Consumption & Auto-off: powered by 3pcs 1.5V AAA batteries(not included), and if there is no operation in about 15 minutes, the tester will automatically shut down to save battery. Portable Pocket Size: compact designed is convenient to carry around, wrapped with a rubber sleeve to protect the multimeter once it fall from a height. Specifications: Temperature: -40~1000/-40~1832 Material: ABS Display: 9999 counts Sampling Rate: Approx. 3 times/second Over Range Indication: "OL" Environment Condition of Using: CAT.IV 600V, CAT.III 1000V, pollution level 2, altitude