Inventory management is critical to supply chain operations. Good inventory management optimises business operation efficiency and customer experiences. We have collaborated with an industrial partner to develop an Inventory Auditing and Surveillance Autonomous Mobile Robot (AMR) System based on artificial intelligence of things (AIoT). The AMR system is equipped with RFID sensors for identifiying assets during inventory audits. It is also integrated with LiDAR-based Simultaneous Localisation and Mapping for environmental scanning and localisation, and computer vision components for object detection and mobile surveillance applications. It is particularly helpful for the logistics and retail industries where accurate and efficient inventory management is essential.