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. Four in one monitor two digital tube.