本研究主要利用 LoRa 遠距離通訊技術,建構一個低成本、低耗電、應用範圍廣的防盜警示裝置作為物聯網系統裡前端的感測裝置。;In this paper, we use LoRa which is long-distance communication technology to construct a low-cost, low-power and wide range of burglar alarm devices as the front-end sensing nodes for the Internet of Things system.