It reacts to smoke and heat, optical smoke detection can be switched off by pressing the button in the center for 15 minutes if z. B. to be drilled.
If the smoke alarm to be tested, press 3 seconds the button and he is an attenuated signal, making it a non-equal rips the eardrum. Simply very practical. In addition, the smoke could be approached with 230 volts, but this mounting plate is necessary because the part sont to the normal disk can not tighten.
I say only one thing, not to be compared with the Euro 5 gizmos from the hardware store, just buy it and worth the money!
