We’ll, looks like I’ll be staying with the relays. No one has the IDX multiplex controller, they said leadtime on it could be several months.They were having supply issues after COVID, and a lot of their products were very delayed. It could be a mistake on Sonny's end, but every IDX item except the AT411E vacuum timer shows out of stock on Kleen-Rite's site.
I can get all the relays I need! Easy decision now!