have a colleague who has been actively involved with the fire protection Tip get my EI times watching / buying.
Well what can I say, I've got a couple of times and then a comparative experiment (with a Prüfrauchspray) made with my previous 5Euro Billigheimer smoke detectors made. It has so ca.10Sekunden has taken longer to the Billigheimer addressed, and at the time was quite enveloped in the Ruach. The EI was there much faster and hit with little noise at already.
Quite nice the surface protection at the back is (a kind of foam) to protect the ceiling.
The relay contact bzw.noch, the radio option round out the cause. Can only recommend.
The smoke detectors have an expiration date after which you should replace it.
Since the models were 10 years Battery Option and perhaps therefore even better than this.
