SMS has the great advantage that you receive a clear text with information about the alarm. A major disadvantage is that SMS is not always reliable. The messages do not always get through immediately and this does not only happen around New Year's Eve. For critical alarms, we therefore always recommend a telephone call with speech. The receiver confirms the call with a (personal) code, so you know for sure that someone has received the message.
With the Octalarm-Touch we also recommend installing the free app Adésys Alarm on your smartphone. Besides easily accepting an alarm with, for example, your fingerprint, your iris scan or your smartphone unlock code (depending on the possibilities of your smartphone), you also have always and everywhere direct insight into the status of your (connected) detectors and you can set and manage your (connected) detectors remotely.