I am from india and i couldn’t find many vendors for the devices that i need. mostly i am looking for 4 channel swtiches/relays and wifi/wireless switches that are fairly affordable. It should work without internet with HA
I have around 30-40 points/devices to control over the area of 100 ft ( 30 Mtr ) x 50 Ft ( 15 Mtr ) with metal structures and fairly congested area.
If i can find relays/swtiches that can handle 3 phase high amp then i need more switches as well.
So far i found SONOFF but it’s uses their own protocol. i found some reference to make it work with home assistant with plugin.