Product Overview The SDA-D4000AL is a heavy-duty dual-voltage modified sine wave inverter engineered to match worldwide AC grid standards. It converts 24V direct current from battery banks into switchable 110V or 220V alternating current, supporting both 50Hz and 60Hz frequency output. Adopting optimized soft-start circuitry paired with MCU intelligent power management, it effectively suppresses startup surge current for inductive loads. With 1200W continuous power and 2400W