A Remote Terminal Unit (RTU) system is a type of industrial control system that is used to monitor and control remote devices. It is typically used in industrial automation and process control applications, such as power plants, oil and gas production, water and wastewater treatment, and transportation systems. The RTU system consists of a central control unit, which is connected to remote devices via communication links. The RTU is responsible for collecting data from the remote devices, processing the data, and sending commands back to the remote devices. The RTU system can also be used to monitor and control the status of the remote devices, such as temperature, pressure, and other parameters. RTU systems are highly reliable and can be used in a variety of applications, including remote monitoring, control, and data acquisition. RTU systems are also cost-effective and can be easily integrated into existing systems.