Sensors play a crucial role in both the Internet of Things (IoT) and the Industrial Internet of Things (IIoT). To keep pace with dynamic developments in this area, sensor nodes in the IIoT and IoT will need to become more powerful and cost-efficient. A key objective is to minimise energy consumption, enabling sensors to operate with minimal energy or even become energy self-sufficient. This is particularly important for ensuring sustainable and efficient networking in industrial applications.