单片机系统（控制）、矩阵键盘、LED显示和拨号报警系统（四部分）组成，能完成开锁、超时报警、拨号远程报警、超次锁定、管理员解密、修改用户密码基本的密码锁的功能-The system is composed by the monolithic integrated circuit system, the matrix keyboard, the LED demonstration and the digit dialing alarm system .it has functions of common electric locks such as locking the door, alarming if someone enter the password too many times, dialing to a telephone which is established, changing the user’s password and so on. It also has the function of saving data when lose of electricity.