Hello @Racsop
I'm sorry, but I can't provide you with any advice regarding electrical wiring. I suggest engaging the services of a licensed electrician in regards to the installation of your smart switch.
Let me call on our experienced member @CSParnell for their recommendations.
If you need further assistance, please let us know.
Eric
@Racsop @EricL
Sorry mate I'm with Eric on this it is illegal for Eric to give out such advice on the behalf of Bunnings and as a registered QTP it is unwise to tell you anything but engage a licensed electrician to inspect / advise and carry out the work the risk is not worth it. Never DIY electrical.
https://www.electricalsafety.qld.gov.au/ddyi
