After about 2 1/2 months spins the motion. Until that time, he has worked as it should. Coverage and reaction were perfectly adequate for use in the bathroom. Silk days a few spins of the detector. He simply had not turned on the first time. Trying the power to interrupt in the hope that he again funktionier was unsuccessful. So remove the lamp (behind the lamp it is installed), and then easily switch a microswitch, had to follow that after the light no longer emanated :-( this experiment a second time I have done what was then led to success. However, only a couple of days. It does not really make sense every time expand this detector and to play to the micro switches around. It's really annoying. Particularly annoying are here now the redemption conditions of Amazon (after 30 days: they contact the manufacturer). Amazon makes it pretty easy here. I've bought from Amazon and expect within the warranty period an appropriate service, the Amazon would not offer, according to the motto: Why do not you even after your rubbish: - (( So I can throw the alarm into the trash and then buy a new one with the same risk.