Interesting Instrument for USB Users

We're in the process of moving and setting up USB chargers throughout our new home. However, as experience has taught us, some USB chargers are not reliable. We've had a couple which had dead or weak outputs and two that actually output over 8V when it should have been 5V. The two 8V outputs killed a couple hundred dollars of electronics before they were detected and removed. That is why we use meters like this one to check all the USB outputs we're installing. The output appears to be very accurate. The charge currents are showing about what we'd expect for individual devices. For safety and to save your sanity when trying to understand why a USB device is not charging, try this device.

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