What is the Exit Push Button？
May 31, 2019
A switch is an electronic element that opens a circuit, interrupts a current, or causes it to flow to another circuit.The
most common type of switch is an operating switch that allows a person to operate a machine or give orders, and has one
or more electronic contacts.The "closed" of the contact means that the electronic contact is on and allows the current to
flow through;The "open" (open) state of the switch means that the electronic contact is not open and current is not
allowed to flow through it.