The device appears in terms of accuracy, do not keep what is promised: The temperature is not displayed correctly (+ 2,2grad 22.8). The zero position of the device can not be realized in the DC area. There is probably a too high residual magnetization in the current probe. Remedy can be realized by pressing the REL button. In order, however, the inaccuracies of Hysterekurve are given. Otherwise, the device seems to be useful.