Hello everyone, I'm new to this forum. I'm only 19 years old but I want to major in Electrical & Electronics engineering. So besides some practical skill I've learned from working with my dad I have a lot to learn especially in terms of theory. During my experience I've heard a few companies mention controlling water/waste management stations via internet/mobile phone. I've seen commercials in which a person can control the lighting of his own home and even surveillance from a mobile phone but not something as big as an entire plant. Is this done anywhere in the world? How does this even work? Regulating water and air pressure through mobile/internet, It seems really interesting to me that one can sit in an office and just click a button to turn off and on or even increase or decrease values to devices.