Banggood Panel Voltmeter Settings and Setup as an Ammeter

I bought this display on Banggood for a project, and was curiuos about the button on the back which lead me to this video and finding out that this panel meter, sold as a voltmeter, can also be deployed as an Ammeter if you use the appropriate shunt resistor. I also figured out how to navigate the menu and what each menu number was.
DIsplay can be found here: http://www.banggood.com/0_56-Inch-DC-0-1030200V-3-Wire-LED-Voltmeter-Digital-Display-Panel-p-932966.html?rmmds=search

Видео Banggood Panel Voltmeter Settings and Setup as an Ammeter канала Chris Wouse