I/O modules for Home assistant

hi, are there any I/O modules that can connect to Home Assistant preferably with analogue inputs as well?
I am an electrician so hard wiring is easy and i am looking at building a new house so access to run cables even easier.
i note a lot of the wifi or smart switches and devises are ridiculously expensive especially here in Australia plus i imagine to many of these will cause issues with the wifi router?

any way does anyone know of an I/O board i can wire all the switches, PIRs, temp sensors and outputs to and then control from HA, will need to be compliant to Australian standards as well but let me know what you know of and i can look in to the compliance side of things.

Jack