LCD USB Detector Voltmeter Ammeter Voltage Power Capacity Tester Current Meter

feature: brand new, high quality guaranteed! USB power can be used to detect the quality of the line. The current sampling is 50 milliohms, and the loss is smaller. With precise current calibration, the current accuracy is higher. The phone will automatically turn off the output when it is fully charged. Display voltage and current data MAH, timing, easy to view. It can detect the mobile power output MAH. USB male plug 5V charger, mobile phone and other equipment female plug, directly read the current and voltage. Normal shutdown: When the screen displays 00:00H, press and hold the button for about 3 seconds, the number will flash. Press and hold the button for 0.5 seconds. Each time you press the button, it will increase by 0.5 hour. Then press and hold the button for about 3 seconds to save. Over-current protection and over-current protection: When the screen displays 0.00A, press and hold the button for about 3 seconds, there will be a flashing number. Press and hold the button for 0.5 seconds, and each time you press the button, it will increase by 0.5A. Then press and hold the button for about 3 seconds to save. When it shows the home screen, press and hold the button for about 3 seconds to clear the stored data. Can be used to find charging problems of digital devices. Specification: Device type: USB current and voltage capacity tester Power: 0-150W, 0-999.9Wh Accuracy: ±1% Colour: Black Supported connector: USB Voltage: DC 4V-20V (overvoltage protection can be set arbitrarily) Current: 0-3A (overcurrent protection can be set arbitrarily) Test capacity range: 0-99999 mA Internal resistance: 0-999.99 ohm Timing: 0-99 hours Time: 0-24 hours Size: 2.28*0.91*0.47in(58*23*12mm) The package includes: 1 x USB current and voltage capacity tester. notes: 1. Due to manual measurement, please allow an error of 1-3mm. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks!