Hubitat for AUS/NZ Chat

Has anyone had any experience replacing a thermostat that controls radiator heaters? I have one of these kinds of old thermostats that control ours:
Screen Shot 2020-09-25 at 8.54.20 pm

It seems like it's pretty basic in that it's just 240v behind this thing and the thermostat just connects the line or disconnects it to control the radiator units.

I think (?) this is called a line voltage thermostat, are there any thermostats available in AU that can replace one of these and connect to Hubitat?

This one seems like what I need but it doesn't look like it's available in AU:
https://www.sinopetech.com/en/products/thermostat/line-voltage/