The 4G dongle is a brand-new data logger. This data logger utilizes cellular technology to connect to LuxCloud, rapidly transmitting real-time operational data from both photovoltaic power stations and energy storage batteries to the LuxCloud monitoring system. This facilitates accurate and comprehensive data analysis as well as fault warning and handling. The LuxCloud system can issue control commands to the inverter, enabling stable, reliable, and intelligent management of photovoltaic power station operations and maintenance services.