Micro Switch, also known as a sensitive switch, limit switch, or snap-action switch, is a precision control component that triggers signal changes through minimal mechanical force.
The limit's core characteristics include low operating force, rapid response, and high reliability, making mini swotches widely used in electronic devices, industrial control systems, household appliances, and automotive electronics.
The limit switch is the “heart” of a mouse button, and micro sw‘s performance directly determines the mouse's operational experience. Both the left and right buttons, the middle button (when the scroll wheel is pressed), and the side buttons all incorporate micro switches. When the user presses a button, the physical pressure causes the metal spring contact inside the micro switch push button to instantly make contact, forming a closed circuit. This sends an electrical signal to the motherboard, prompting the system to recognize the button press. After the mini switch's contacts close, current flows through snap action switch's internal circuitry, triggering the microcontroller (MCU) on the motherboard to recognize the button action. This action is then converted into a digital signal (e.g., left-click, right-click press) and ultimately executed by the operating system to perform the corresponding function (e.g., select, copy, open menu).
