Benefits:
+ Fast and uncomplicated delivery
+ Simple "assembly" - you need them only with the adhesive system attach to the ceiling, all 5 pieces were fixed within minutes. Alternatively, there are anchors and screws, but that certainly want to avoid most of drilling in the ceiling.
Disadvantages:
- Within 3 days they fell three down from the ceiling, vobei the vulnerability of the adhesive between the magnet and the adhesive side was such that the "debt" was not in our ceiling material or any "Ungeschicktigkeit" when attaching. The smoke detector falls down with great noise, both calculated during sleep. Luckily they were not placed on beds, so that nothing has happened
- As a test, we have held a burning paper towel with lots of smoke beneath the smoke detector, but it has done nothing! Thus, it is questionable for me the reliability.
