PolyU collaborates with an industrial partner to develop an Industrial Internet of Things (IIoT) and Big Data Analytics based Predictive Maintenance System (PdMS) to provide real-time machine/equipment monitoring for predictive maintenance service and minimize loss caused by machine/equipment failures. The system integrates various Industry 4.0 emerging technologies, including Wireless Sensor and Actuator Network (WSAN), IIoT Middleware and Big Data Analytics, etc. The PdMS attempts to minimize unexpected machine/equipment failures so as to improve operational efficiency and increase productivity in factories. The PdMS supports different sensors to meet the needs of different machines/equipment.