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The document discusses Zigbee wireless networks and Wireless Sensor Networks (WSNs). It provides details on: 1) What a WSN is and its applications in monitoring and controlling environments. 2) The technology requirements for WSNs including low cost, small size, low power consumption, and operating in unlicensed radio bands. 3) Standards for WSNs including IEEE 802.15.4, Zigbee, Bluetooth, and WiFi and their differences in features.





































































































