12/16/19/22mm Flat Head Black Metal Push Button Switch Momentary Latching Waterproof Illuminated Led Light Switch 5V 12V 220V

Difference between auto-recovery button and auto-lock button:

1.Momentary,Self-reset: When you Press the button，Press-key will automatically

return.

2.Lacthing,Self-locking: When you Press the button，Press-key will stay in position ，until you press again，And then the press-key return.

What does the signal "NC" and "NO" means?

" NC ": Normal Close

" NO ": Normal Open

" C " : Common