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This paper presents the emerging applications of the GSM technology. Using the public GSM networks, a home automation system has been proposed, designed, implemented and tested. The design of a stand-alone embedded system that can monitor and control home appliances locally using built-in input and output peripherals is presented. Remotely, the system allows the homeowner monitoring and controlling the house appliances via the mobile phone set by sending commands in the form of SMS messages and receiving the appliances status. The GSM modem provides the communication media between the homeowner and the system by means of SMS messages. The system software driver is also developed using an interactive C programming language platform.