Integration of Siren succeeds very easy as with other sensors of Gigaset. Siren has to be placed on the base, and then the connect buttons on base and Siren are held simultaneously in an outlet in a maximum of 1 meter. After Siren was registered on the Gigaset system and demanded once for an update.
In the subsequent test, I was surprised by the volume. The alarm sound is louder than our smoke detectors and quite unpleasant. The deterrent effect is given by. In addition, a burglar is likely to be made aware that an alarm system is installed (which always offers the risk of external alarm). Therefore, I do not think that uninvited visitors are looking for the source and disable by removing from the socket would (After all, I do not live in the Louvre).
The siren can be activated and deactivated both in the Holiday mode and the user mode in the app, so you can switch the noisemaker as needed. The alarm goes off the way after about 1.5 minutes and sound again until the next time a sensor event is triggered. You can disable the siren only about deleting the alarm in the corresponding app reworked (directly on the homepage) or by removing from the socket, here has Gigaset as this only through a mode change was possible at the beginning.
Siren can incidentally be used up to 50 meters away from the base. I have a test, used in a sheltered socket outdoors, worked fine, so you could even make an external alarm it (However, the device is not splashproof), but since I do not want to torment my neighbors with any false alarms, I use Siren this not.
In previously conducted test tripping of the system Siren was always reliably activated. The alarm is loud enough for a stay in the rooms is uncomfortable. Therefore, I see it as a worthwhile extension of the system, because if one wants to achieve a basic protection of property. In addition to the motion sensor for me the best extension of the element system. Could be a little cheaper.
Update:
Through the range can also be used Siren for giving the device in the absence of its own neighbors when they declare themselves ready to look at the apartment / house. So during a burglary attempt the neighbors are alarmed with the same and can accordingly inform the police.