... power system product, solar &wind hybrid system(on grid and off grid systems).For wind system mostly use for household power ... wind energyFree maintenance.Use life:5~6years,Warranty:2yearsOff-Grid inverterPure sine wave inverterDC12V/24V input,TF600w110/120/220 ... /230V outputWith grid charger build-inProtection against overload, short circuit, anti-reverse ...