It is said that as soon as Shahrukh Khan enters his house, the lights of the house turn on automatically, the curtains of the windows open and the house lights up, do you know how all these things turn on automatically. All this happens with the help of a small sensor which controls all of them.
In earlier times this technology was very expensive but now common man can also use it in his home. These sensors can be bought from anywhere online-offline. Let’s take a look at some of the sensors that you can buy under Rs. 300.
