Ever since the light bulb was invented, mankind has relied on “flipping switches” to turn on the light and brighten up their spaces. With technology advancement, light sources have changed over the years - from incandescent bulbs to fluorescents, and now LED light bulbs. Similarly, it's not only the source that witnessed improvements, but the switch plates used to cover the wiring has also undergone changes.
There were a number of big transitions in light switches as well before the rocker came into being. Early technology consisted of push buttons which were built in sets of two for every bulb – you used the first button to turn on the light while with the second one turned it off.
After the earliest push buttons, pull ropes and toggle switches were next, followed by rocker switches. Now...