Inductive sensor

An inductive sensor is a small device that can tell if something is nearby without touching it. It uses invisible magic waves to detect metal objects, like a shiny coin. When the metal object gets close, the sensor sends out a signal, just like a friend yelling "hey, are you there?" If it hears a response, it knows the metal object is close, and it can turn on a light or make a loud noise. This can be very helpful for robots or machines that need to know when something is approaching, without actually touching it. So, an inductive sensor is like a metal detector, but for machines.