Here I made a smart AC plug using an arduino pro mini .We can on and off any AC device using this smart ac plug via android mobile. We can control it through our voice and by tapping on the screen by connecting the mobile to the ac plug through bluetooth. It's main advantage is it is not need to put inside the switch board it only need to plug in to switch board socket and connect devices like table fan, table lamp etc... This circuit can also use inside the switch board.

Watch it's video