Will US Ring Alarm Products Work In The UK?

i have noticed that the US Ring website has more products that the UK website, But i was wondering if i buy the Alarm Panic Button from the US, would it work in the UK?

The Ring alarm sensors are Z-Wave. Z-Wave in Europe is a different frequency than in the US, so a Ring alarm sensor sold in the US will not work with a Ring alarm base station sold in the UK.
http://manuals-backend.z-wave.info/make.php?lang=en&sku=4AP1S90EN0&cert=ZC10-19036387

From what I understand, Ring devices that connect via wifi like cameras and doorbells work fine anywhere.