Can easily measure the output voltage of the USB port and the working current of the device Please note It can only display the realtime working voltage and current of electrical appliances truthfully and does not have the function of a discharge meter that is it cannot set a certain voltage or current to discharge It is small in size does not require a power supply or other auxiliary equipment plug and play It also detects the charging current and voltage of any USB charger computer USB home charger car charger to determine the performance of the charger and whether the performance of the charging cable meets the requirements Widely applicable any mobile phone any electronic product can be used easy to operate suitable for factories exhibition demonstrations laboratories and users nbsp brPerformance Parametersnbsp 1 Inputoutput voltage 3V9V 2 Voltage resolution 001V 3 Inputoutput currentnbsp 0A5A recommended range 03A 4 Current resolution 001A 5 Accuracy plus or minus 1 6 Line loss about 01 ohms 7 Test content voltage current 8 Communication function yes 9 Data calibration function yes
