Clipsal CBus has a product called WISER which is basically a wifi router connected to your Cbus network. With some programming a static IP and a free app, it will allow you to control items that are on your C-Bus system.
Coming home from an overseas trip in the middle of summer? Turn on the air conditioning from the airport so the house is cool when you get home. Out longer than expected? Turn on a “scene” or individual outside lights and inside lights to give your home a looked in feel. Alarm system accidentally triggered? Turn off and reset via your phone. This can all be done with CBus and Wiser.