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Top 5 Positive Customer Reviews for meter voltage wattmeter
Arrived in a month. Measures momentary power, current, voltage, frequency etc. But I still haven't had enough time to study how to configure it for measuring Wh and for accumulating and remembering the data for long period of time... I wish it worked out of the box. So I still don't know if it even has power independent memory or would forget the accumulated values on first power outage...