How many, and how are they controlled?There are many expansion options.
And what are the appliances? 120V items? 240V items? How are wired now, or how will they be wired?
the wires will be too long for reliable sensing and maybe even control.______Rob
will this work effectively.
Quotewill this work effectively. I said above a network of Arduinos connected with RS-485 is one way to go.