The Huawei Smart Power Sensor DTSU666-HW is a smart electricity meter designed to accurately measure three-phase electrical network parameters and integrate with Huawei solar inverters. The device is used in solar power systems to monitor energy consumption, control generation, and manage energy flows between the solar power plant, load, and grid. The meter provides highly accurate recording of key electrical parameters, including voltage, current, active power, frequency, and consumed energy. With Class 1 measurement accuracy, the device enables reliable data collection on system operation and effective energy consumption management. The Huawei DTSU666-HW is equipped with an RS485 communication interface and supports the Modbus-RTU protocol, enabling easy integration with Huawei SUN2000 series inverters and the FusionSolar monitoring system. This enables the implementation of intelligent energy management functions, including load monitoring, energy consumption analysis, and limiting energy export to the grid. The meter is DIN rail-mounted, features an LCD display for displaying network parameters, and boasts compact dimensions and low power consumption. Huawei Smart Power Sensor DTSU666-HW is widely used in residential, commercial, and industrial solar power plants. Key features: - Smart three-phase electricity meter - High measurement accuracy (Class 1) - Voltage, current, power, frequency, and energy measurement - RS485 communication interface - Modbus-RTU protocol support - Integration with Huawei SUN2000 inverters and the FusionSolar system - Energy consumption and generation monitoring - Support for limiting electricity export to the grid - DIN rail installation - LCD display for displaying parameters