开锁：插上电源后，程序自动调入初始密码，此时依次输 入：000000，然后按【#】（确认）键，此时锁会打开，可以看到显示open，密码锁打开。修改密码：在开锁状态下，再次输入正确的密码并按下【#】（确认）键，此时听到两声提示，输入新的六位密码并按【D】（重设）键，再重复输入一次新密码并按【D】，会听到两声提示音，表示重设密码成功，内部保存新密码并存储到AT24C02。（如两次输入的新密码不一样，则重设密码失败）。报警并锁定键盘：当输入密码错误后，报警并锁定键盘3秒，如3秒内又有按键，3秒再启动。当输入错误3次后，蜂鸣器报警并且按键被锁定。4、当重置新密码时，新密码会保存于AT24C02存储器里。

5、退出并关锁：按下【*】（取消）键，此时锁关闭，所有输入清除。

万能密码是131420，当密码忘记了，输入后，密码会变成-Unlock: When plugged in, the program automatically transferred to the initial password, then turn enter: 000000, then press the [#] (ENT), then the lock will open, you can see the display open, locks open. Change Password: In the unlocked state, re-enter the correct password and press [#] (ENT), then heard two prompts, enter the new six-digit password and press [D] (reset) button, then Repeat your new password and press [D], you will hear a double beep tone, indicating successful reset the password, the new password and save the internal storage to AT24C02. (Such as the new password twice entered is not the same, then reset the password to fail). Alarm and lock the keyboard: When you enter the wrong password, the alarm and lock the keyboard three seconds, as another button within three seconds, three seconds and then start. When you enter the wrong three times, the buzzer alarm and keys are locked. 4, when the reset a new password, the new password will be stored in the AT24C02 memory.