I would now 100% do this with a SwitchBot Bot and this fully local integration. I've programmed two D1 Mini ESP32 boards now for full local control/input from SwitchBot devices. Once you get drivers etc needed for the first Arduino sketch, additional ESP32 boards are just plug-in and flash in about 5 min. Boards are cheap. $15 CAD from Amazon for me, but I know you can get them for less.
Rock solid performance, but you do need to be running HA and an MQTT broker. But y'all know my opinions on this. If you're not running HA and these two integrations (HA -> HE & HE-> HA) to tie it to your HE hub, you're missing out on a heck of a lot more than just fully local SwitchBot devices.
For us, this is no longer a want or need. Our new car is electric and fully connected. I can start the heating or cooling before I get into the car if I want, with or without the fob. Just need the vehicle to arrive. It's probably somewhere on the Pacific ocean right now.
