The manual is very detailed and there lay several tips for installation. Overall, the installation is very easy.
On a wish you can fix the smoke detector in its holder, so that a screwdriver to open / remove is required.
Designmäßig sees the smoke detectors very chic, but it is also significantly higher / lower than others. 5cm are there he stands down from the ceiling (the cheap smoke detectors are deep only about 2.5 cm).
In the dual smoke alarm you can disable the "smoke component", so that it only responds to heat, ideal if you often have smoke.
Deactivation is however very cumbersome (looking a hidden plastic tab and then break out to get to the switch) and the smoke detector loses his license!
Additionally, you can also send the smoke alarm 250V plug (optional bracket needed !, battery remains on the safety indoors) and several smoke detectors per two-wire line or wireless link (radio module optional).
Well, I think that one minute the smoke function via front button for 15. can eliminate or generally can confirm a false alarm by pressing a button.
The test function does not react with the full alarm sound (of which one is fast deaf) but confirms the function of the smoke detector with an acceptable signal.
If the smoke alarm would not be so outrageously expensive, I would equip all rooms with it. So it remains first in the kitchen!