Smart controller for Renewaire Premium X – GreenBuildingAdvisor

I gave up on the Zehnder ERV mostly because of price, and I am running round metal duct.  Instead, I purchased a Renewaire Premium X.  For the initial install, all I need is push-button timers.  HOWEVER, the controller needs to support seven push buttons (6 bathrooms and the kitchen).

Renewaire support, all the way up to engineering, says they can only support six buttons and that I should get a third-party controller.

The BACnet controller supports it, but it is very expensive, and I don’t need or want that level of complexity.

Just seven timer buttons (would prefer not to use slider switches) and the option to add in the future CO2 and maybe some other sensors.  Please help.

New construction at 8500ft in Fremont County Colorado. Zone 5a.  I am going to add some silencers and large standard-sized filter boxes.  There is a plan for pre-heating fresh air on days when the outside temp drops below a set temp.