... the power off situation.Can be used in many occasion, such as in cars,in trucks,at boat,with solar system ... maker, portable vacuum ,etc.2000W:Fridge ,Reversible Drill, washing-machine ,etc.3000W: Water pump ,air conditioner ,etc. ModelTH- ... strictly during operation. 3.Don't use this product in high-temperature, moist and dusty environment. 4.Don ... to ac inverter 12/24V to 220V used in car and house.ect