I have a wireless AC that doesn’t have any Homey integration, but it does have Alexa integration, and that’s working just fine. What I would like to do is create a Homey automation that, if the room doesn’t detect any presence for 15 minutes, sends a command to Alexa to turn off the AC. Is that doable?
There is a Homey Alexa app that exposes Alexa devices to Homey.
A while back that wasn’t working well so I switched to using VoiceMonkey, and haven’t switched back. It’s been very reliable. More here.