Led Tact Switch

mostly used for hand held devices for transitioning between on and off states.
A tactile switch (also known as a Pushbutton Switch) is a type of switch that is actuated with physical pressure. It can be used to control a circuit in the same way as a normal switch, but it is more commonly used as a user interface component in some types of electronics, such as hand-held devices, that are specially designed to be operated by pressing them with a finger or thumb. When a tactile switch is pressed, it typically triggers an electrical connection or disconnection of the circuit, allowing the device to enter different modes of operation or to change settings.