IoT devices are devices that are connected to the internet and can collect, send, and receive data. They are used in maintenance operations and management to monitor and control equipment, automate processes, and provide real-time data. IoT devices include sensors, cameras, and other connected devices that are used to collect data from the environment and send it to a central system for analysis. This data is used to improve maintenance operations and management, such as predicting when equipment needs to be serviced or replaced, and providing insights into the performance of the equipment. IoT devices are also used to automate processes, such as scheduling maintenance tasks and sending alerts when equipment needs to be serviced.