I have 5 smoke detectors in the house in operation, and have been already aroused unpleasant within the letzetn Months 6 times in the middle of Nacvht. All alarms were false alarms and even without a Vernetzzung was not the better. Article reclaims nevertheless continued false alarms. Annoying, I can not recommend that! There's not so easy to detect when a network of triggering RM, seeking man in the house first by not just safe in an emergency.