Ever imagined how quickly the horn of your vehicle responds? Not even a second or two, just push the button and there comes the sound. You put your hand off the button and it’s back to silent mode.   An instant response of these horns is due to what we call “push -button switches”. Push button switches are those which can be made to work with the force of a finger or two.  Not only vehicles but camera, lifts and several other common and uncommon interactions with machines/gadgets involve push button switches applications. But what makes this switch so user friendly? What makes it respond only for the time it is pressed no longer or shorter? How the contacts inside this switch work?