Utilities are increasingly leveraging these intelligent devices to bolster monitoring, control, and automation within their distribution networks, thereby accelerating fault detection, minimizing outages, and optimizing grid performance. DTU stands for Data Terminal Unit, which serves as a key element in IoT technology. It establishes a reliable connection between edge devices, such as sensors and monitoring equipment, and cloud platforms. The primary functions of a DTU include the collection, transmission, and processing of data. Through data analysis and device control, users/enterprises can increase automation levels, reduce costs, and improve efficiency. Against the backdrop of the internet era, 80% of global data will come from IoT. The difference between DTU and wireless modem is that wireless modem is a physical tunnel to access network. By enabling smooth communication between disparate devices and systems, DTU forms. From a professional perspective, DTU (Data Transfer Unit) is a type of IoT terminal device specifically designed to convert serial port data (such as RS232, RS485) into IP data and then remotely transmit it via wireless cellular networks (such as 4G/5G) or wired networks. If an industrial equipment.