If you in hand - without touching the wall or floor - is already recognized as a current carrying conductor, one simply turns it off again and calibrate it. What is important here: the buttons really let go when the red ring lights.
Then you should show the device the wall as you need it. In my case (in search of antenna and power cable) quite successfully. Test You can see it in the Your going to places you know exactly where the cable runs where.
My conclusion is also deshabl: Despite lousy instructions and an operator that you absolutely can not improve one device, but that is not suitable for everyone quite a very sensitive feeling has. For my purposes absolutely right!
