Complies fully its purpose, is easy to install and reliably holds even after years. A genuine alternative to drilling. The only drawback: many smoke detectors offer on the back ("ceiling side") any flat surface, so the contact plate glued partially only "webs" - with heavier smoke detectors could perhaps eventually lead to problems. However, I do not as yet none fell from the ceiling. If you want to attach his smoke detector with Magneto link, it is advisable to pay attention to the back of the product when purchasing. Just so you have a good feeling.
