I have installed 3 wifi relay devices in a installation.
Everyone works fine for 2 or 3 switches, but then they stop to work.
Led light still working, and wifi menu and it is not burn.
Supply voltage is 250V (three phases installation), and I disconnected them and reconnected in a 230V but they don’t work.
I can hear relay opening and closing but really really quiet (“click”)
I don’t know how to solve it, if I change the relay or not, and why happend that.
The relays lines are for lighting and no more than 10A, so I discarted over amperaje.