USB Security Tester LCD Display Mini USB Current Voltage Testing Instant Mobile Phone Charger Safety Monitor

• Current calibration: double-click the screen to flash, load the standard 1. 00A (preferably set to 1.00A constant current load meter), double-click again, the screen displays 1. 00A, wait a moment for the horn to beep, the screen stops flashing, the system confirms the new accuracy and memorizes it, and then the system runs with the calibrated parameters. (Press the key to enter the next setting)
• Voltage calibration: adjust the number to 5.00 V standard supply, the display shows the current accurate voltage value, double-click the screen to flash, double-click the second time it will automatically calibrate to 5.00V after the calibration is completed, the speaker will beep automatically Confirm, calibration is complete (press the button to enter the next setting)
• High-voltage protection threshold setting: The system preset is greater than “20. 0V” protection, double-click the screen to flash to enter the adjustment mode A: Decrease setting: the number of bits decreases by 0. 1V, or press up and down and then long press to decrease continuously, B: Increment setting: double-click to increase 0.1V, or press once and long press to increase continuously.
• After the adjustment is completed, wait for a while to stop flashing, the system automatically confirms and exits the setting, the setting is completed (the preset button enters the next setting)