I created a plugin to control the PSUControl plugin via MQTT or specifically with HomeAssistant.
As far as I can tell it works pretty reliable. More information you find on github.
I plan on releasing it in the repository some time later. But since this is my first plugin I haven't figured everything out yet.
One question I have is: Is there a way to test the update function without the plugin being registered in the repo?
Feedback is appreciated.