I do not have the proper equipment to check the calibration of this gauge, so I will not comment on its accuracy. First impressions are that this is a quality product with some complexity and it will take time to fully learn how to use it properly. I was very disappointed with the USB to PC connection process. The drivers are very primitive, as in Windows 7 they are primitive. In general, the main problem is that nothing happens when connecting the meter with a USB cable in Windows 10. You don't even get a chance to try USB drivers because the USB port doesn't work at all. Even after following the instructions to install the drivers, the device does not show a connection. i am not new I have been working in IT for over twenty years and also work with IoT devices. I've installed thousands of USB devices over the years, worked with chip programmers, etc. that required proprietary USB drivers, IOT devices like esp8266, etc. The USB port does not work on this meter. Looks nice but useless. If you don't plan on exporting your logs for documentation, that's not a problem. I give it one star for fraudulent business practices.
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