Hi,
I am Electrical and Electronics Engineer with 14 years experience I have worked on a project for developing the control system for a air depurator unit for operation theater in hospitals. It has all features you mentioned ablove pre-filter, activated carbon, HEPA, UV, plasma,etc. But it is controlled by buttons in it. I can add wifi capability to it and provide you.
If you need I can even share the images and videos of the air depurator I worked .It will be enclosed in a MS metal enclosure .
Also can you provide the size of your device you expecting.
You want the complete product to be developed or you want only the control unit part?
We can discuss
Regards
Senthil
Chennai,India