KWS-MX19 USB Tester DC 4V-30V 0-5A Current Voltage Meter Timing Ammeter Digital Monitor Cut-off Power Indicator Bank Cha

Features 1 Timed shutdown settingKeep clicking the button until the screen display is shown on the right Then long press the button for 3 seconds the number on the screen will flash Click the button again to increase 30 minutes delay shutdown Then long press the button for 3 seconds to save your settings 2 Overvoltage protection settingKeep clicking the button until the screen display is shown on the right Then long press the button for 3 seconds the number on the screen will flash Click the button again to increase 0 5 volts Then long press the button for 3 seconds to save your settings 3 Overcurrent protection settingKeep clicking the button until the screen display is shown on the right Then long press the button for 3 seconds the number on the screen will flash Click the button again to increase 0 5A current Then long press the button for 3 seconds to save your settings 4 When back to the main page long press the button for 3 seconds to clear saved data of cumulative working time electricity and energy 5 Current and voltage calibration method Please use 5 000V standard voltage Hold the button until Factory settingappear on the LED screen It will calibrate automaticly Product Parameters 1 Voltage DC 4V 30V Overvoltage protection can be set 2 Current 0 5 5A Overcurrent protection can be set 3 Power 0 150W 4 Electricity 0 99999mAh5 Energy 0 999 9mWh 6 Timing 0 99hours7 Countdown 0 24hours 8 Charging resistance 0 999 999 Cu