Stage heating between ductless mini splits and boilers or electric baseboards;Cost-effective, non intrusive and aesthetically pleasing staged heating configuration options;24 VAC and RS-485 BUS HVAC equipment interfaces;Dry and Wet contacts to support up to 7 boiler or electric baseboard zones;Ethernet, Wi-Fi network interfaces and 915 MHz communication interfaces to enable fully wireless solutions in the home;No C-Wire pull needed to install boiler or baseboard thermostats.