The new energy on-board inverter of sunray power supply can effectively solve the power supply problem of RV. The sak series pure sine wave on-board inverter newly launched by sunray power supply can be directly used for the power supply of RV. Sak series on-board inverter has the characteristics of fast response, high conversion efficiency, strong load resistance, small input surge current, safe and stable operation, etc. the product has six intelligent protections, including short-circuit protection, overload protection, overvoltage protection, undervoltage protection, overcurrent protection and overtemperature protection.