Oscilloscope Measure Waveform: If the probe magnification is greater than 40V and the attenuation is 10X, press the AUTO button to automatically recognize the measured waveform Compensation Waveform Calibration: Check if the waveform display status is compensated normally as shown in the figure Data Charging Cable Lithium Battery: 2000mAh lithium battery is equipped with a charging line and automatic shutdown time can be set Double Safety Tube Intelligent Protection: Built-in overload protection dual fuse, and equipped with high-performance chips, read data more accurately,10A 250V/200mA 250V Storing Data Computer View: Long press and hold the SAVE key to save the data. After connecting to the computer, press the MENU key to enter the menu. Press F3 "Data Save" on the third page to view the data Specifications: DC voltage: V999.9mV~999.9V DC voltage: mV9.999mV~99.99mV AC voltage: V999.9mV~750V AC voltage: mV9.999mV~99.99mV DC current: A9.999A~999.9mA DC current: μA/mA99.99mA~9999μΑ AC current: A9.999A~999.9mA AC voltage: μA/mA99.99mA~9999μΑ Resistance: 0~99.99mΩ Capacitance: 9.999nF~99.99mF Frequency: (AC voltage range) 40Hz~1kHz Temperature: ℃(-20~1000)℃ Temperature: ℉(-4~1832)℉ Diode: √ Data Hold: √ Anti-burnout double fuse: 200mA 250V/10A 250V Language selectable: Simplified Chinese/English Backlight brightness adjustment: 30% 50% 80% 100% Data storage/viewing: USB connection to PC True RMS: √ On/off beep: √ Maximum count: 9999 counts Counting battery type: 3.7V lithium battery 2000mAh Product material: ABS/TPE Pen material: brass/PVC Pencil length: 107cm/42.1inch