1500w Pure sine wave inverter 1.Off-grid solar inverter 2.8-year warranty 3.TUV,UL,IEC,VDE certificates 4.Frequency 50/60HZ 1500w Pure sine wave inverter, 1.5KW-6KW Solar Inverter With 8 Years Warranty Specifications: Our this products can endure external pressures or hitting.temperature controlled cooling fan. And all our products comply strictly with the IEC61215, ISO9001, UL, TUV, CE and so on ...