The solution design takes the type I DCU as the core, and can be equipped with DIN rail meters, IoT MCCB, IoT power meters, IoT metering boxes, and adopts HPLC communication module (dual mode) for real-time information interaction.To meet the current needs of the grassroots metering team for effective management and instant perception of the low-voltage distribution network, improve work efficiency, and realize the overall improvement of power supply quality, energy efficiency and user experience.