This 1pc 12mm Small Push Green Button Switch features a selflocking fixedlatching action with a large ball head, designed for doorbell and accesscontrol applications. The compact 12mm size fits tight panels, while the green push button provides clear visual indication of the active state. The latching mechanism ensures a definite onstate after pressing, helping to prevent accidental presses. Key benefits Selflocking fixedlatching operation for a secure, persistent onstate until reset. Green button provides quick visual recognition in entry and control environments. 12mm diameter compact design suitable for small panels and enclosures. Large ball head offers comfortable, intuitive actuation and tactile feedback. Simple, reliable component for doorbell and accesscontrol installations. Key attributes Size: 12mm diameter push button. Color: Green. Functionality: Push button with selflocking fixedlatching mechanism. Head: Large ball head for easy actuation. Quantity: 1 piece. Applications: Doorbell and accesscontrol systems; suitable for panelbased installations that accommodate a 12mm switch. Compatibility and performance Mounting suitability: Designed for panels or enclosures that accommodate a 12mm push button opening. Operational design focuses on reliable latching action and tactile feedback for repeated use in security and control contexts. Built to perform in typical doorcontrol and accesscontrol environments where a secure pushbutton input is required. Use cases Door access control: Install as a doorbell/entry button to trigger a door strike or access mechanism, with a clear pressed state that remains engaged until reset. Security panel input: Add to a control panel or keypad area to serve as an acknowledgement or reset button in alarm or monitoring systems. Small automation project: Integrate into compact home or workshop setups where a durable, selflocking pushbutton input is needed for gate releases, cabinet locks, or other controlled entry points.