Metal knob with a mounting diameter of 16mm. This button has a white LED illuminated ring, which works on 12V via a separate circuit. In addition to the 2 LED connections, this button has 3 contact points, NO, Common and NC. When the button is pressed, it will remain pressed until it is pressed again (locking). This button is suitable for a maximum current of 3A with a voltage of 250VAC. https://elecena.pl/product/27744277/opencircuit-button-with-led-white-locking-metal-16mm 2025-01-23 https://elecena.pl/product/27744277/opencircuit-button-with-led-white-locking-metal-16mm 2026-04-12