... and modified sine wave output, the modified sine wave inverter offers high efficiency. 2.Automatic switch between mains power ... to control recharging time. 9.The modified sine wave inverter comes with informative LED indicator and alarming functions. 10 ... have CE, SONCAP, GOST, UL(pending) .modified sine wave inverter lntegrating research & development, production and marketing, Yiyuan Electric Co., ...