1 Piece NC Green normally closed Mini Push Button Momentary OFF ON Switch A2
1 Piece - push button switch NC 6mm normally closed.
An example of normally closed would be, you hook this switch up to an led or a motor then connect it to a battery. the motor or led would turn on once it gets power. then once you press the switch down the motor or led would be off. once you take your finger off the button then it will bounce up and the motor or led would turn on.