中文摘要：

论述一种基于GSM的防盗报警密码锁系统，具有设置密码、修改密码、管理员权限设置、设置键盘锁定时间等功能，并采用红外装置监测是否正常开门。当用户输入密码错误次数超过规定值或监测到非正常开门时，蜂呜器报警，同时以手机短消息SMS的形式通过GSM网络给用户发送报警信息。经测试，系统使用方便、安全可靠。

英文摘要：

A password lock security system based on GSM is introduced, which can set password, modify password, set key- board lock time and administrators. Whether the door is opened normally can be monitored by infrared ray device. In this case or when the wrong password is input continuously three times, buzzer alarm will be started. Simultaneously the alarm message will be transmitted to appointed consumer via short messaging service （SMS） of GSM network. The testing results show the system is conve- nient, stable and reliable.