The siren is necessary to indicate a break-acoustically in my opinion, absolutely. Unfortunately, the siren does not work at all outlets, no matter how far away they are to the base. Sometimes only a faint clicking noise from the siren comes sometimes it works. The whole element Gigaset system stands or falls with the availability of the Gigaset cloud. This was several times now unreachable. Too bad if you just want to switch off then the stricter monitoring and can not because the cloud can not be reached. There must still be filed properly.
Since then just over a week, I'm waiting for a solution to my problem. Except for a thank answer to my support request with the reference that the department will report has not happened. Poor support! 9.4.15: the Gigaset cloud once again is unavailable for several hours ...