Commissioning is very simple, pure battery, flip the switch and you can already emphasize with the device on the wall and go on line search. But first I had problems, as the device has the lines "found" in a rather broad area, or even beeped, sometimes not. It is important to note that you should not keep in the vicinity of the sensor device, also it is recommended to put your hand in about 20-30cm distance to the wall in order to this earth.
Then, the Dauergepiepe has ceased. drilling I caught no lines etc. .... but may also have been lucky. I forgive first 4 star ....