In this project I have made an android app which can control any electrical device from anywhere in the world.
With the touch on your smartphone, turns on the appliances. The wireless switches are here !!
This is an Internet of Things Project, which allows you to control your devices through your android app.
All you need is,
a raspberry pi
4 channel relay module
I have published a research paper of the same well described on International Journal of Innovative Research in Science, Engineering and Technology