Zigbee modules (in-wall dimmers/relays) on the market? (Sweden)

That’s a zigbee 3.0 device. I think it will work with the newest V3 hub, although it may need custom code. It probably will not work with the older hubs.

The Orvibo relay works with the zigbee ZHA profile, and should work with any of the smartthings hubs. If you can find one to buy.