I had really promised much of it ...

It has indeed the impression that nowhere can be drilled. Green almost never lit up the signal light, but quite often red, sometimes even yellow. But when you are allowed to drill?

I had the opportunity to search the same walls with a cable locator of Würth, and have learned a lot. The Würth knows only "red" or "green" and with a push button, it was also possible to infer the distance from the line. Wherever the Würth "green" indicating the Bosch was a tentative "orange" here. This then has helped me to interpret this as an orange "Okay". In particular, it is the Bosch very, very, very ... important the area to be examined to sweep many times. Then "thinking" he is mostly again and shows up some points, "orange", and there you can pretty safely drill. But without this direct comparison with the Würth I would never have thought of it and should always scared to drill a line ...

Honestly, I have no confidence in this technology (Bosch) and send the unit therefore back. Too bad ...