Unreliable with false alarms

Due to the good rating by Stiftung Warentest, we acquired these smoke detectors directly from Ikea. After two weeks we have taken both smoke detector again shut down and replaced with high quality because it is several times come after such a short time false alarms. Can be recommended therefore from me, unfortunately not. These Ikea smoke detectors can be found on the Internet even more negative comments from Ikea customers, our specimens were thus not an isolated case.