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In recent years, the advances in wireless communication and electronics have accelerated to develop many wireless network solutions to replace existing wired networks. A wireless network solution can support mobility and flexibility of nodes in a network. Especially in sensor networks, it has many advantages to replace cables with wireless logical links. On the other hand, Bluetooth is generally considered as a promising short-range wireless technology because of its inexpensive cost, low power and small size, and thus Bluetooth has been gaining increasing interest from various industries. For the above reasons, we adopt Bluetooth technology for a wireless sensor network, which is designed for security systems. Since Bluetooth will continue to be a feature found in many devices, it is worthwhile to investigate its use in wireless sensor networks. In this paper, we describe a Bluetooth wireless sensor network for security systems, which includes the implementation issues about system architecture, power management, self-configuration of network, and routing. We think that the methods or algorithms described in this paper can be easily applied to other embedded Bluetooth applications for wireless networks.