I don't have time to read the Klein manual, but looking at the picture, you have to hit the sel button to switch between ACV and DCV.
My interpretation of the symbols suggests ACV is default and pressing sel switches it to DCV. If this is correct, then I would not buy this meter for myself since I mainly do DCV measurements.
On some Brymen meters and possibly Dave's BM235, it remembers your last selection after you power it off. I don't have time to read the BM235, but that maybe a feature valuable to you?