A lot of the cheap Chinese DMM have fake ratings. I don't know why, but that is what is observed.
The odd thing is that for some meters (some UniT) there is a version with fake ratings and one for the EU with an at least reasonable rating that is considerable lower despite being essentially the same meter, if not higher grade fuses.
It looks like there is a different meaning to CAT... in China. More like the Cat number corresponds to the number of
and
. Maybe for China or India they get away with this and those cheap units find there way to others too. AT least most of the fakes are rather obvious. I am still waiting to see the a CAT V rating on a handheld.
To have any trust in the CAT ratings it needs additional labels from test institutes (e.g. UL, GS, ...) - however these might be fakes too.