The product appears to be sturdy but the alarm went off twice in the same day when there was no smoke! Fortunately, we were present and were able to turn the alarm off and prevent firefighters involved breaking the door ... It is surprising for a product Bosh brand, but I noticed that on the housing was made in China, it may have a report ...?
Finally, for those who would have liked to fix without drilling using the magnetic kit Elro RMAG2, know that the bottom of the alarm is not "full" (big hole) or flat, it therefore can not be the paste.
A positive point, however: the alarm is powerful and is inevitably awakened at night!
