输入密码正确，锁开（绿色指示灯亮），密码不正确，锁保持关闭状态（红色指示灯亮），并且蜂鸣器报警。密码输入错误可进行删除。显示器为两个四位一体数码管。-Enter the correct password, the lock open (green light), the password is incorrect, the lock remains closed (red light), and buzzer alarm. Password input error can be deleted.