The off grid low frequency solar inverter is a device that is used to convert the DC power generated by solar panels into AC power. This inverter is designed for use in off-grid applications, such as in remote locations where there is no access to the main power grid. The inverter is able to store DC power in batteries, which can then be used to power AC devices.

Solar inverters use a process called maximum power point tracking (MPPT​) to ensure that they extract the maximum possible power from the PV solar panels. MPPT involves constantly monitoring the voltage and current output of the PV solar panels and adjusting the operating parameters of the inverter to optimize power extraction.

On December 9, 2022, Sunray Power held the 2022 marketing year-end summary conference. The company's general manager, Mr. Yuan, the general manager's office, Mr. Ma, and members of the marketing system attended the meeting.