Feature:1. Dual Way Insertion: The tester supports bidirectional insertion detection, current direction indication, and the plug with USB contacts has a sturdy coating to prevent scratches, stains, and damage.2. LCD Color Screen: The voltage and current tester is equipped with a 1.44 inch color LCD screen, with 4 operation buttons and 5 connection ports, which is clear and intuitive, easy to operate.3. Measuring Range: Can measure various USB chargers, laptops, desktops, mobile phones, mobile power supplies, cables, etc., and measure capacity, power, load impedance, and temperature.4. Charging Protocol: The voltage current tester has a USB interface for easy device connection, supports Type C, fully digital compatible with fast charging protocols such as PD QC2.0 QC3.0 4.0 MTK.5. Alarm Function: When the temperature exceeds 45, temperature display flashing; When it is less than 3.8V or greater than 30V, voltage display flashing; Greater than 3A, current display flashing.6. Rotatable Screen: The power tester screen supports 360 degree rotation, can be read at any angle. When inserting various digital devices at any angle, supports positive reading, easy in measurement.Specification:Item Type: Voltage Current MeterModel: A3Input Current: 0-3ACapacity Measurement Range: 0-99999mAhPower Measurement Range: 0-99999mWhLoad Impedance Measurement Range: 1.5Q-999.9QTemperature Measurement Range: -10-100, 0-200Screen Brightness Setting: 0-5, 6 Levels in TotalDisplay Screen: 1.44 Inch Color LCD Display ScreenTime Measurement Range: 0-99 Hours, 59 Minutes, 59 SecondsTemperature Measurement Error: 3, 6Delay Screen Off Time: 0-9 MinutesCurrent Curve Range: 0.00A-3.00AQuick Charging Recognition Mode: QC2.0 QC3.0Refresh Speed: 2Hz.Package List:1 x Tester1 x Storage Box