Amazon: Customer reviews: SZCY LLC AC 220V/2.2KW ...
One last thing on RPM - my setup is for a 2x72 belt grinder, so RPM for me isn't as useful as Surface Feet Per Minute. (SFPM), which is how the belts are rated for optimum speed. So, I did some fancy calculations, taking into account the size of my drive wheel and ended up setting P21 so that the rpm display now shows SFPM rather than RPM.