The project described in this thesis conceived with the aim to realize a device (SwiRem) to remotely monitor electrical equipment deployed in a medium-large external environment. Thanks to Wireless Sensor Network (WSN) technologies, it was possible to identify a pervasive monitoring infrastructure, with a considerable number of miniaturized and independent nodes, which sends information regarding the monitored system to a central collector. The integrated ad-hoc WSN solution, can remotely monitor the power consumption and switch ON/OFF the power supply of a wide number of electrical devices, deployed in an extensive outdoor area. Moreover, the monitoring system must be separated and independent from the monitored one and needs an alternative network to send data and to receive commands.