... All round safety protection 1000w DC 12V to AC220V Uninterrupted power supply1. Efficiency:>90%2. DC 12V/24V input3. ... 600W: Home stereo ,Blender ,Fan ,etc.1000W: Coffee maker, portable vacuum ,etc.2000W:Fridge ,Reversible Drill, washing-machine ,etc.3000W ... scopehousehold electricity supplyinverting DC to AC requirementNot household electricity supply, AC input low voltage protection, AC input high ...