I have the smoke detector is now about 8 weeks. So far, they have not provided a single time false alarm. The attachment with the adhesive pad has also worked very well. Have at all a ceiling painted woodchip wallpaper and thought the smoke alarm would fall down at some point, but I was wrong (luckily). Since the attachment is not a fell down! The LED lights up in smoke alarms every 30 seconds briefly, but who says the sturgeon, for example in the bedroom I have to disagree. The LED is so unobtrusive that you will notice that only when one looks directly. Whether the battery by holding the promised 10 years I can not say at this point, of course. All in all I'm very pleased and also give full five stars.
