Nexx garage can handle 240v ac, but you would need a plug converter like this one on Amazon:
But before purchase please try this simple compatibility test to check your Garage door opener compatibility:
Take a wire with both ends stripped or a straightened-out paper clip and put each end to the same terminals as the wall button wires are terminated to. By doing so, if your door activates, then your garage door opener is compatible with Nexx Garage. If the door does not activate, then the opener is not compatible by default and a custom adapter would be required for it to work with Nexx Garage.