“Therefore, in order to increase the longevity of machines and equipment and prevent breakdown during operations, end-users are increasingly favouring predictive maintenance. For this reason, machine condition monitoring is becoming more prevalent, with vendors of machine condition monitoring systems increasingly applying for approval and certification from regulatory bodies. These disadvantages have compelled vendors to incorporate wireless device technology into their monitoring systems, which eliminates the need for hard wiring, increases the speed of data transmission, allows untethered operations, enables easy monitoring of mobile machinery, allows access to hazardous areas and is cost-effective due to the lack of wiring expenditure.