I've tried a few different controllers (Sensibo, Ambiclimate, Broadlink) and this one is the best.
Controls your air conditioner (any with a remote, but check for compatibility, particularly for ducted). You can even control it via the internet.
Or the Air & Room sensor version for $179 which looks like it adds a motion sensor so it can tell if you're there and turn it on or off (or up & down) to suit. I've not used that one.
https://reductionrevolution.com.au/products/sensibo-air
Free shipping over $150. (eg. delivery for one to Tas is $9.95)
Also 10% off Elgo ceiling fans and Tornado fans.
Cheaper here if you’re an Origin customer, or know someone who is -> https://www.ozbargain.com.au/node/673094