The state and history of appliances/devices, state of sensors in a particular room, complete history of the status of a light-weight sensor. To put it simply, it is an automated switch to controlling a high-current circuit with a low-current signal. Fig 5a shows the picture of the relay that’s used for the current system. Pictures of the design means of smart home prototype, aspect view of preliminary design with the base color, and ultimate prototype with installed appliances/sensors. There are many water home equipment on your home available in the market similar to water purifiers, water heaters, dishwashers, etc.