I saw these on ebay in Australia. Has anyone tested them with home assistant?
That looks a whole lot like a Sonoff T1, or at least a china knock off of it. There are many threads here about those and reflashing those. However I’m somewhat skeptical that they are actually “Australian standard approved and certified”, but I could well be wrong.
I really doubt they’re certified for aus, but they would work with HA 
Contacted the seller asking to see the RCM approval. We’ll see what happens.
How did you go with these switches in Australia
I didn’t have a neutral wire at the switch, so didn’t purchase.