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Overview: With the availability of cheap computing technology and the standardization of different wireless communication paradigms, Wireless Sensor Networks (WSNs) are becoming a reality. The authors realize that there is a need for an unambiguous classification and definition of WSN devices. Such a classification scheme would benefit the WSN research and industrial community. This paper considers the spectrum of wireless devices ranging from passive RF devices to gateway devices for the classification. Attributes of the wireless devices are grouped into five broad categories. Each of these are further classified to provide sufficient details that are required for a typical WSN application.
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