Question

Any good Z-Wave vibration/earthquake sensor on the market?  

Answer 1

Fibaro's Cat's Eye Motion Sensor Motion/Temp/Light/Accelerometer I have a few of these in my set-up. Works great, just don't mount to a wall that moves when a door gets shut. I would also caution reporting more than the default as it chews through the battery rather quickly. I live roughly 300 yards from dual train tracks, I ended up hiding the accelerometer feature as it reported every time a train went by. I did not play with the sensitivity . In the set-up notes there is a section on setting it up as a simple Earth-Quake detector.  
https://manuals.fibaro.com/motion-s...nsor/

Answer 2

Can be Zigbee too. I have a smart things hub.