As far as I am satisfied with the detectors. Priced they are top. The Assembly was also very easy and fast. The surfaces of the magnetic disks are also very good. I wanted to test how sensitive the detectors are. I have had 2 colleagues then blow their cigarette smoke it. No Reaction. So who's smoking can stand under it. To see if it works I have ever burned with a soldering iron rosin producing a thick smoke which is similar to a fire. Here the indicator has quickly responded only rapid flashing then came the alarm. Negative I find: The really bright LED. In the bedroom, which is not so great. Did they taped but what it does not completely better. (Flashes every 30 sec) And because it's a slightly queasy feeling makes me on the detector is you have in weekly testing. Who rises every week on a chair and listens to the cries of? It is, incidentally, not in small print behind it, but forward the font which is pronounced by the test button (you can also see in the pictures) tells that one should test weekly. The instruction writes 2 sets: Once weekly press the test button of the smoke detector and later It is strongly recommended to test a week I do not know whether you have to stick to it if it is written in the manual. Who should also check it if you did it every week. But a detector which suggests that one has 10 years of not working with him and the EU prescribes a one time must test the year. But then you get told to unpack every week must deal with it is ugly. If there is someone expertise on the subject, I would appreciate a comment. I would prefer it 3 1/2 stars give but since it does not go up. 4
