... range: DC22~60V4. This system don't use solar charge controller. low cost.5. CE, RoHSSpecifications (Inverter parts) ModelMK- ... functions(short circuit, overload, over temperature, low battery,.) and so on.WarrantyWe provide 1 year warranty.PaymentWe accept payment via TT ... and safe.Shipping:We offer as many shipping options by Sea or by Air. 4KW Grid Tie Solar System, AC110V Solar System On Grid ...