Inverter converter transformer 500W DC 12V to 220V 380V AC Can be used as a pure sine wave inverter, modified sine wave inverter, a four-stage inverter circuit and other functions   Features Power: 500 W Input voltage: DC 12V Output: AC220V 380V and AC18V Load current: 0.35A Output wave: high frequency square wave Protection: no protection Military grade PCB board, size 8cm * 7.5cm