The GE switch will not work in the UK. You have to match both power requirements and Zwave frequency.
The GE switch is listed on the official “compatible with smart things” list for the US. But not for the UK.
Zwave frequencies are set at the factory and cannot be reset. In many cases there are also legal restrictions as to which frequencies can be used in which regions.
See post 1 in this thread for options that currently work in the UK.
For more information on different zwave frequencies, see the international FAQ
