The device looks a bit clunky and unwieldy, but is greater than it can vemuten the images. Otherwise, Batterienen were there - loaded this and go. The measurement process is automated and goes quickly out of hand, the results are reproducible, even in the very low range of Rpe Mesungen. Easy operation with 3 keys. Display is not switched on when device under test. What is not necessary for the respective protection class, will not be time, so no confusion. Display is large and high contrast. All in all ok for such a testing device, "lower" Preisklassse. I guess, for the usual tests on portable appliances (if you're not just several hundred samples) satisfies the. For the major industrial application which is then tedious, of course lack the interfaces and barcode reader to automate logging. But for small test series it was okay.