Parameters:
Measuring Accuracy: +/-1.5%, +/- 2 word
Measuring Range: AC 80-300V (110V, 220V)
Consume Power: Less than 1W(about every 1200hours consume 1 kilowatt-hour)
Plug Style: US Plug
Number of Digits: 3 Digits

Potentiometer Adjusting Method:
Please use the Phillips screwdriver to open the outer case of the voltmeter
Then adjust the potentiometer with small size Phillips screwdriver
If the displayed voltage is too high, please adjust potentiometer counter-clockwise
If the displayed voltage is too low, please adjust potentiometer clockwise

Applications:
The monitor can be widely applied in AC 80-300V mains measurement, such as office, factory, laboratory, household and so on.
You can use this item in RV as a way to view voltage to prevent issues with appliances.
You can use this item to monitor the voltage of other appliances; when this volt gauge displays too high or too low voltage, you can selectively turn off your appliances or equipments so as to prolong the life of your appliances.