Purchased and installed a lot of money. As mentioned, the assembly should be treated with caution because the detector is not sitting on the board, just because this is just .....
We were just one year satisfied with the device (it is indeed a 10-year promise) and suddenly bekannnen the false alarms. 2 within 3 days and then to top it off again at night. It's great if you have to go on the ceiling every time and the children are awake by then. Since I mean false alarms and no battery message, it is if you have the unit finally also almost deaf - Top!
We then exchanged the device and now after 1 week again evening 2100 false alarm. We have a clean Non smoking house and have neither fire nor anything else which smoke generated. Now we are fed up and return the unit to the realization that apparently perceived quality is not what it used to be.
I recommend this product starting from absolutely!
