This USB Pocket Digital Multimeter is a very useful tool that can be used to measure voltage, current, capacity, and power going to your phone/battery pack. Use the button to choose between 7 different modes. It is a very handy device to evaluate whether or not the computer, USB wall charger, USB car charger are outputting acceptable voltage and current range for the device you are connecting.
<br />MULTIFUNCTION - This ideal multiple USB Detector can be used for capacitance checking, capacitance clear, over voltage and under voltage alarm, over-current, and short circuit alarm. Using DROK alignment tool, you can monitor output voltage and current of mobile charger cables, power use of raspberry pi or Arduino board, compare the performance of solar charger in different conditions. You can easily test the power/quality of the chargers and USB cables.