Introduction - If you have any usage issues, please Google them yourself
Password lock four and seven: Enter the four-digit hexadecimal password incorrectly three times the police - password is four four of the input state of password settings, and P3 is pressed input password storage spaces increase - After setting the password, by S7 password is set to the new password then P1 is unlocked, input, and three comparisons, wrong, D3 light alarm system