My "smart home" is just installing IR blasters to control all my existing IR-controlled ceiling lamps and air conditioner units. In the worst case, I can always revert to using the IR remote controls (or wall switches).
They're firewalled to my LAN and integrated into iOS using Homebridge running on my Synology NAS.
They're firewalled to my LAN and integrated into iOS using Homebridge running on my Synology NAS.