... cost of production, which make the possibility of pure sine wave inverters ( and UPS) entering into the household market come true, it ... against output short-circuit; against overload, and when you throw off its load, it will turn on the unit automatically. · ... current is stable, the average current is 10A.· Output pure sine wave: 220V+/-3%.ApplicationTube lightings, Energy-saving lamps, Refrigerator, ...