I know this is an old thread, but I have an MI3000 and it does seem to be a bit daft that you can't switch the tester so that it does the R1+R2 test at a socket front using the 13A plug lead supplied with the tester. It would not have been difficult for them to provide this feature, and it would save messing with a Kewtech R2 plug (I know it's not a major thing, but it's an omission none the less). Daz