Abstract: A method and system allowing for the use of traditional buttons and switches to operate sophisticated features of smart appliances when a smartphone, a tablet, or a computer is not available is provided. Wall switches with existing wiring in a building or buttons on appliances can be used when a smartphone or other remote controlling devices are not available. A normally-closed (NC) wall switch or button can be used to control a smart appliance with only a power line connection in between the NC switch and the smart appliance without a wireless connection, or additional wires to send control signals.