I am not sure the OP is getting all of the points everyone is trying to make.
#1 - If it is a US model hub, it will operate on the 908.4 MHz frequency
#2 - If it is a US model hub, the frequency it operates on is possibly not legal and/or not recommended for use in other countries. You would need to check with your local regulatory body to understand what is assigned the 908.4 MHz chunk in your country. Keep in mind that pretty much any hub will work in any country until you bump up against interference from what ever else is assigned usage of that spectrum.
#3 - Most 230V compatible devices you find will be for 868.4 MHz, not for 908.4 MHz. That is the point others are trying to make. If you happen to find 908.4 MHz compatible devices (switches, outlets, etc), they probably won’t handle 230V without giving up the magic smoke.
Now with that stated…if you still want to know based on what you posted, you have a US hub.