ABSTRACT: This paper presents a new novel software application system that can be control distributed devices based on mobile/Bluetooth networks. The AT commands where analysed and processed by the application system to man-age a distributed multi-function mobile/Bluetooth control system. To evaluate the application system a full home prototype model were built to be used in a real time control system. In this system, a real time data can be accessed worldwide using the proposed application system via a GSM modem. The proposed application system shows a significant results when it used with a GSM (Global System for Mobile)[1]. A distributed multi-function control system were used and tested. The system can also be configured to control an alarm or any other electrical device via a mo-bile phone using SMS text messaging. The proposed application system can control a home automation from the re-mote location, determines the real time actions with a feedback from the system. The Cellular Shield will send the signal to the output PIN’s which are programmed using Java language to control the devices operation. The concerned authority can control the system through his mobile phone by sending AT Commands to the GSM modem connected to the computer and the proposed application system works with all GSM modem technologies [2] and in turn to main board controller. The application system providing the access to the system for security and automated monitoring and control the system operations remotely.