Welcome to the community.
Have a look over at the ‘Australian Certified’ thread.
I recently got one of these. You can also get dimmers that look the same. That said, I don’t recommend them as it seems to be causing issues on my ZigBee network and I’m about to send it back.
A more expensive, but far better in my opinion is to use Z-Wave dimmers and switches placed behind whatever wall plate you like. (the two links basically being what I have elsewhere and will be replacing the ZigBee unit with)