The meter is a portable intelligent one that can automatically identify the ACV, DCV, resistance, capacitance, buzzer and choose the range accordingly. And it also Features of auto power off, backlight, illumination, diodes, buzzer, NCV test, live wire detection, true rms, low battery indicator, and more. The users with no professional physical knowledge can measure the technical data of electrical appliance easily. Features: Multipurpose Measure Gauge: including measuring AC/DC voltage, current, temperature, resistance, capacitance, frequency, continuity buzzer, diodes, live line identification, etc. Safety Operation: has overload protection of 250V AC/DC at all the ranges, and complies with the standard of IEC 61010 600V CATII and pollution grade 2. Auto Power-off: the meter will automatic shut down if there is no operation in 5 minutes. and the backlight and flashlight will shut off in 30s of no operating. Clearly Digital Display: 2.1-inch LCD screen with white backlight has analog display which can show the variation tends of measurements, 6000 counts display makes the reading more accurate. Magnetic Adherence: inbuilt with magnet on the back, which provides lots of help to air conditioner maintenance engineers during working. More Features: it has other functions of data hold, illumination, backlight, NCV test, low battery indicator, buzzer alarm, and more. Specifications: DC Voltage Range/Resolution/Accuracy: 1~600V/0.001~0.1V/(0.8%+5) AC Voltage Range/Resolution/Accuracy: 1~600V(45Hz~2kHz)/0.001~0.1V/(1.0%+5) Current Range/Resolution/Accuracy: 0.050~10A/0.001A/(2.0%+5) Temperature Range/Resolution/Accuracy: -50~1300 (-58~2372)/1()/(3.0%+5) Resistance Range/Resolution/Accuracy: 0.1~60M/0.1~0.01M/(1.0%+5) Capacitance Range/Resolution/Accuracy: 0.001nF~100mF/0.001nF~0.1mF/(4.0%+5) Frequency Range/Resolution/Accuracy: 10~2000Hz/0.01Hz~0.001kHz/(2.0%+5) Material: ABS Display: Max. 6000 counts LCD display Safety Level: 600V CAT II overvoltage protection Conversion Rate: Approx. 3 times/second Overload: display "OL" Auto Power-off: 5 minutes Backlit & Illumination Auto-off: 30 seconds Working Environment: 0~40 (