(1) What is the travel switch?
The stroke switch is also known as the position switch or limit switch, its role is the same as the button, but the action of the stroke switch contact is not manually operated, but the use of the stopper on some moving parts of the production machinery to collide with its roller so that the contact action can be switched on or off some circuits, which are used to control the direction of movement of the production machinery, the size of the stroke or the position protection.
The button requires us to manually operate in order to make it move the contact action.

(2) Working principle of the travel switch:
1, the commonly used stroke switch has bumping block type (linear type) and roller type.
2, the roller type is divided into automatic recovery type and non-automatic recovery type: non-automatic recovery type requires the moving parts to run in reverse to make it reset,