The US Plug voltmeter can be directly plugged in socket, it can immediately display the current voltage; it is suitable for office, factory, laboratory, household and so on.
The biggest advantage is that when you see the current voltage is too low or too high, you can selectively turn off to run a household appliances or equipment.
In particular lowvoltage easy to burn household appliances, it can effectively protect your household appliances and equipment life (it can also be a simple electrical test pen).
LCD display blue blacklight, easy to view even in dim light.
There is potentiometer inside the meter for accuracy adjustment. Application Method :
The product can show the voltage of power by connecting to the plug of AC 110V
It is important for you to let the children away from the product.
Don't use the product in a damp environment.
Potentiometer adjustment :
Use screwdriver to open the outer case of the voltage meter
Use screwdriver in small size to adjust the potentiometer
If display voltage is too high, adjust potentiometer in counterclockwise
If display voltage is too low, adjust potentiometer in clockwise Package Includes : 1x US plug LCD Digital voltmeter.