根据设定好的密码，采用二个按键实现密码的输入功能，当密码输入正确之后，锁就打开，如果输入的三次的密码不正确，就锁定按键3秒钟，同时发现报警声，直到没有按键按下3种后，才打开按键锁定功能；否则在3秒钟内仍有按键按下，就重新锁定按键3秒时间并报警。 -According to set a good password, the password used to achieve two key input, when the password is entered correctly, the lock to open, if you enter an incorrect password three times, on the lock button for 3 seconds, also found that the alarm sound, until there are no buttons After pressing 3, then opened the key lock function　otherwise there within 3 seconds press the button to re-lock button for 3 seconds and alarm.