Push button accessories are the component parts that make up push buttons, which are a switch mechanism that controls one aspect of a machine. They may be used to build, replace parts or enhance the capacity of a regular push button.
Push buttons form an essential part of many devices you'll come across on a day-to-day basis, from calculators, to kitchen appliances, to telephones, to arcade games. In an industrial setting, they are often used as an emergency stop button. In this case, they are often connected to another button, so that the pushing of one releases another, as a safety mechanism.
Push button accessories come in all shapes and sizes, but a few common categories include: