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,Friends in this video we will know about USB tester. This is a UNI-T UT658 mode. This USB tester can tell about two things voltage and amperes. We can test amperes and voltages of any USB port at any time without any hesitation with this device. This device have digital display LCD screen in LCD screen we can watch digital display in which machine will tell about input voltages and output current in other words we can measure the amperes that USB devices is using. This USB devices is very beneficial for the mobile mechanics. Mechanics can diagnose the problem with the mobile phone charging issue.
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