19mm Flat Metal Switch Momentary IP67 (Pack of 40)

This Push-Button Switch is a non-latching type (Momentary) has 2 switching contacts, normally-open and normally-closed. The switch . A Normally Closed (NC) contact, in its default state, makes electrical contact with the circuit. When the button is pressed down, the switch no longer makes electrical contact and the circuit is now open. Therefore, electricity can no longer flow to the other part of the circuit to turn or power on the respective part of the circuit the button was made to switch. A Normally Open (NO) contact, in its default state, makes no electrical contact with the circuit. When the button is pressed down, the switch makes electrical contact and the circuit is now closed and allows electricity to flow to other part of the circuit.