The fourth industrial revolution (or Industry 4.0), is now upon us — made possible by the Internet, cloud computing, data analytics and the roll-out of Industrial Internet of Things (IIoT) infrastructure. Although prior industrial technology deployments had enabled the monitoring and control of various systems in factories, power plants, oil refineries, gas pipelines, rail transportation and suchlike, IIoT has the potential to bringing about the next phase in the progression of automation, through employing industrial wireless sensor networks (WSNs).