Digital power saving EDS-650VA single phase voltage stabilizer has microprocessor control system, 30 minutes energy saver off every 3.5 hour, AC 200-230V output voltage range, AC 80-280V input voltage range, LCD display, ±1.5% output precision, 50/60 Hz frequency input rate, thunder protection / surge protection / spike protection / high voltage protection / low voltage protection, over load / high voltage / low voltage indicator.