10 in 1 DC USB Tester Current 4-30V Voltage Meter Timing Ammeter Digital Monitor Cut-off Power Indicator Bank Charger(White)

Ammeters10 in 1 DC USB Tester Current 4-30V Voltage Meter Timing Ammeter Digital Monitor Cut-off Power Indicator Bank Charger Specifications:1. Voltage: 4-30V2. Current: 0-5.1A3. mAh: 0-999999mAh4. Milliwatt hour: 0-999999mWh5. Timing: 0-99 hours6. Power: 0-150W7. Charging resistance: 0-999.9 ohms8. Grouping: 1-9 groups9. Internal temperature: 0-80 degrees10.D Positive voltage: 0-10V11.D Negative voltage: 0-10V12. Function keys13.USB14. Output USBFunctional Operation Instructions:1: Click the button to view the charging data saved in groups 1-9.2: Press and hold the button for 3 seconds to clear the charging data stored in a single group.3: Quickly double-click the button to change the display page.4: Press and hold the button for a long time and then plug in, enter the voltage calibration as shown: (5.526V), double-click the button again quickly as shown (5.528V) Click the button to increase the display voltage. Quickly double-click the button again as shown (5.528V) and click the button to decrease the display voltage. Quickly double-click the button again as shown (5.526V), and then click the button to display Current Calibration! The system automatically performs current calibration. After the calibration is completed, it will automatically to the main function page and can be used normally.Package Include:1*USB tester