If you have an older processor, these can be installed, relatively affordably, along with new processors:
https://assets.lutron.com/a/documents/369545_hw_module_interface_spec.pdf
Source: had to go “program a quick job” - which meant figuring out what panels were where, how many existed, and every single load. In renovation. Contractors just used a breaker to turn everything on and off. Setup new processors, as well as a bridge, and I could use HomeKit. I am also Lutron certified, but not for HomeWorks, so take that for what you will
Can’t speak for HWI processors, but if it’s a QS processor, it can take telnet commands. It’s a published and easy protocol.