The implementation of Sensor Network is a vital area of research in achieving accurate data transfer for automated hand hygiene systems. Sensing devices is also called host or end systems, they provide a service to collate data and can access the internet. The investigation of the entire sensors which include Infrared, water, ultrasonic, distance and motion sensor are based on the Internet Protocol Stack. Internet Protocol Stack consist of five layers such as physical, link, network, transport and the application layer, these layers work together to transmit data across the network. Public building is considered vital to be protected from the spread of infection through poor hand hygiene. In this sense an automated system is required to encouraging people to mitigate the spread of infections in such environment. In this context, this paper proposes a Sensor Network Automated Hand Hygiene Systems in public building (SN-AHHS). Sensor Network Automated Hand Hygiene Systems was designed to prevent spread of infection occurring in public building facilities by prompting users. The designed system uses smart devices (sensors and actuators) for SN-AHHS system. Internet of Things (IoT) platform is employed to process and analyze the collected data from these smart devices in the facility. SN-AHHS has been tested and evaluated, the results show that all component can communicate effectively which is vital to activate the require functionality to alert the user to perform good hand hygiene, it means SN-AHHS is activated when the user step into the facility.