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Difference between auto-recovery button and auto-lock button:
1,Self-reset: When you Press the button,Press-key will automatically return
2,Self-locking: When you Press the button,Press-key will live in role ,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