DIY Supplies : ELECTRICALDimensions : normalOperating Temperature : normalAccuracy Class : normalDisplay Type : Digital OnlyPower Supply : DCModel Number : voltage current meterFunction : HD color screen testerInput/Output voltage : 4-30(V)Input/Output Current : 0-6.5APower : 0-195 WattsmWh : 0~999999mWhTemperature : 9~99USB/Type-C Current Voltage Tester Charging Speed Battery Capacity Monitor LCD HD Color Screen Portable Mobile Power Meter NewProduct Parameters:1. Voltage: 4~30V2. Current: 0~6.5A3. Timing: 0~99hours4. mAh: 0~999999mAh5. Power: 0~195W6. Charging resistance: 0-9997. mWh: 0~999999mWh8. Temperature: -9~999. Type-C Port Female: Input / Output10. Type C Port Male: Output / InputFunctional Instructions:1. Click the button to change the display page. Double-click the button to rotate display content.2. Press the button for 3 seconds to delete the charging data of timing or mWh or mAh.3. The product has power off memory function.4. The product has the function of bidirectional charging measurement.Calibration Method:When the input and output are used interchangeably and no-load current occurs, it should be calibrated.Calibration method: Press and hold the button and then plug it in, the product will automatically calibrate.Note: DO NOT connect the load during calibration.