Which frequency version to order
Z-Wave products use a different wireless frequency globally. See 'Z-Wave frequencies' for detailed information on which frequencies have been legally approved for use in different countries.
About WallMote 2 buttons (ZW129) from Aeotec
2 button, wireless Z-Wave wall switch with a magnetic dock. Engineered as a remote control, styled as a touch-switch.
Aeotec maintains WallMote user guide and setup information at that link.