RFID sensors are not a specific brand but a technology category used across various industries. They are produced by multiple companies globally, such as Honeywell (USA), Siemens (Germany), and Omron (Japan). These sensors enable wireless identification and tracking of objects via radio frequency. Key applications include supply chain management, retail inventory control, and industrial automation. Major products include passive/active RFID tags, readers, and middleware. For specific brands, distributors like Radwell and Grainger offer RFID solutions from leading manufacturers.