I just bought the Atten branded one myself, it's in an Atten box, by all accounts I would believe it was a genuine OEM.
However, as soon as I open the box, I notice two things, first, the station does NOT have holes in the right hand side to switch the wand cradle over. I'm a lefty so that sucks for me. Of course I can add the holes myself, but to me it indicated I have a clone.
Second, the calibration pin on the front panel is blanked. I'm not sure how usual this is, but I have seen units with it available.
I intend to take the "Atten" apart before it's turned on, I wonder if someone would be willing to check over some pictures and point out any issues? I'm an Electronic Engineer, so the general stuff is not an issue, but I have a phobia of mains electricity and am not familiar with the wiring regulations etc.
First point of call for me will be to ensure that the live (brown) is the fused wire, and that earth is connected to something, then I'll make sure the earth (yellow, green, yellow/green) pin shows no resistance between the shroud of the handle and the metal of the casing, of course accounting for the paint, and fixing it where there is an issue (with my dremel).
Please correct me if I got any part of that wrong, and whether there are additional points to check.
I don't have a thermocouple or other temperature sensing device to test the accuracy, I intend to buy a better meter, but building up an entire electronics workshop of reasonable quality equipment, all at once isn't easy on the wallet.
Side note: If someone could recommend a meter with temperature capabilities at a decent price (UK) that is reviewed on EEVBlog I'd love to watch more videos and potentially add one to my Christmas list. I currently use a DMM that was ~£5 in Maplin, so in reality it's worth about £2.
Thanks.