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Functional Principle of secty lifePatron®

The available pre warning time for people -and with it time for correct reaction- extends from the moment of alarm release by means of the siren with the arrival of the P-wave to the arrival of the dangerous S-wave and beyond that. Due to the fact that the S-wave does not directly become effective with full strength -but “builds up” strength first - still a few seconds of the running time of the S-wave can be added as the pre warning time which we call S1.In the period S1 the people can still take safety precautions. At the beginning of the period S2 the quake reaches his full strength / intensity, so that people can carry out no more specific measures.

Without an alarm only the period S2 ordinarily remains for people to bring themselves into safety, because only at the beginning of S2 people ordinarily realize (among other things because of the reaction time) that it is an earthquake - then, however, it is too late!