Due to the rising connectivity of mobile devices, industrial applications, smart home applications and vehicles, the importance of wireless technology for data communication is increasing continuously. As a result, wireless technology grew by 32% in 2018 compared to the previous year, and now accounts for 6% of the total industrial network market. This communication medium ranges from wireless data transmission over long distances using conventional LTE (Long-Term Evolution (4G)) and future 5G technology, to short distances via mesh networks. Nearly every innovative and smart application benefits from the wireless technology which is continuously improved and optimised. Some businesses are building on this opportunity to develop smart sensors and energy-efficient actuators. One example is the Energy Harvesting Switch (EHS) from ZF. In addition to electronic and mechanical components, software with various radio protocols is offered which enable data exchange between devices. Depending on the application, various radio protocols have become established in the market which have different properties, and therefore their own advantages and disadvantages. This article will highlight ...