I want a simple but nice looking AC voltmeter to monitor the voltage in my house next to my home theater system. This one fits my bill very well and it works great! The voltage is about 1V from my multimeter when I bought it. But I was able to adjust the reading using a potentiometer with a screwdriver (need to open the case) and got a <0.2V reading difference from my multimeter. Now I have an accurate voltmeter that I can trust! I plugged it into an outlet with a switch so I can easily turn it off when I don't need it.
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