Hardware recommendations

Wow that’s mighty expensive. You can replace that with a single ~$3 esp-12 (8 GPIOs, well 10 if you use TX/RX) and some SSR relays. Triacs are ~$1.25 on AliExpress

I don’t want to build 220v main circuits myself, especially ones that should deal with 150~200W. My solution is cheaper than any commercial solution I could find (be it based on z-wave or knx, etc). I do use esp NodeMCU wherever I can’t get with Ethernet.