Hello to all. Need to ask a question about a doorbell

I'd like to buy a shelly switch to use as a doorbell. Inside the house I'd like to install 2 or 3 Shelly1 or 1L to activate some sort of noise while the button at the front door is pressed. Any thoughts? How would one go about this. I could buy buzzers (any voltage)? Or speakers? In Ceiling?

I'm assuming I can program the smart switch to detect the button press and "buzz" only whilst being pressed.

Does anyone know if there's an Australian version of the wall plug smart plug switch?

Thanks again.