Description: According to set the password, the password input is realized by using two keys function, after the correct password input, the lock is open, if the input password is not correct, three times the lock button 3 seconds, also found that alarm sound, until there is no button pressed after three, to open the key lock function; Otherwise, within 3 seconds, the button will still be pressed, and the key will be reset for 3 seconds and the alarm will be called.
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