IoT became the design language for the future smart infrastructures. Therein, IoT devices are sensing the changes and delivering the data through some efficient radio, while the whole system is meant to be power efficient. In this paper, we gather state-of-the-art technology for building IoT device and analyze the power consumption of the whole system, therefore, providing the useful estimate on possibilities to use it in the future infrastructures. Further on, specific use case is given that justifies the adoption of the device in the real environment.