The SmartGuard can implement on/off-grid switching and load management. Its main function is to switch the inverter between on-grid and off-grid modes. When the grid is available, the inverter works in on-grid mode, and the grid and inverter ensure power supply to both backup loads and nonbackup loads. When the grid fails, the inverter quickly switches to off-grid mode and supplies power to only backup loads.

The SmartGuard contains the SmartAssistant, which can connect to PV systems, ESSs, smart chargers, and smart loads. In addition to unified scheduling of home energy, the SmartAssistant can connect to smart appliances such as Huawei chargers, SG Ready heat pumps, smart switches, and other smart loads. Users can set the reservation time to charge vehicles and heat water in advance at the specified time. In addition, users can set the priority to use PV power for devices as required to make the best use of PV power.