I need to replace my existing tankless water heater and plumber uses Navien. They offer multiple modules to start recirculating including hardwired button, led

I need to replace my existing tankless water heater and plumber uses Navien. They offer multiple modules to start recirculating including hardwired button, led screen control and of course and IoT capabilities. I considered the button for convenience and IoT module just to integrate with the rest of house, keeping preference for physical when adding Smart Control. I added door sensors to my LG washer and dryer. Along with access to their platform for knowing when the machines run and complete I have some logic of whether clothes are present or at least the door not opened. Haven’t done too much with it as I need better dashboard and visual indicators somewhere that is visible to everyone.