feature of the dsp based sine wave inverter are as tightly regulated output voltage and frequencywide input voltage range. high efficiencysuperior power qualityover temperature protectionshort circuit protectioninverter to mains change over at zero crossingsoft startquite operation of ac motors as well as the otherinductive load unlike modified sine wave click on the following links to view models detail : delight (1450 va)vista (850 va)ultra (650 va)