FIBARO Motion Sensor can be configured to work as a simple earthquake detector, by setting tparameter 24 value to 4. Reports with scale of the vibrations (dimensionless) will be sent at the time intervals specified in parameter 22. First report will be sent immediately after vibrations have been detected.
The minimum value of the vibrations, resulting in report being sent, can be defined in parameter 20. Once the vibrations cease, reports will stop being sent.