Nexia siren


I’m kinda new to smartthings but i’ve googled/searched this forum and didn’t find the answer.
I hope you can help me to make things clear.

I bought the Nexia siren, which works on Z-wave US freq. will i be able to add it to smartthings?

And the question in total is, can i add every device which uses the z-wave US frequency?

Kind regards,