What is NO Button How does it works ? In electrical systems, a "NO" push button refers to a "Normally Open" push button switch. Here's a brief description: 1. Normally Open (NO) Configuration - In its default state, the switch contacts are open, meaning there is no electrical connection between them. - When the button is not pressed, the circuit is open and no current flows through it. 2. Operation - When the button is pressed, the contacts close, completing the circuit and allowing current to flow. - Once the button is released, the contacts return to their open state, breaking the circuit and stopping the current flow. 3. Applications - Commonly used in momentary control applications where an action is required only while the button is pressed, such as in doorbells, start buttons for machines, or emergency stop buttons. 4. Symbol - In circuit diagrams, a NO push button is often represented by two parallel lines that are not touching, someti