Max Configurable Power (Watts) 450 Watts / 800VA Output Frequency (sync to mains) 50/60 Hz +/- 1 Hz Unsynchronised Topology Line interactive Waveform type Stepped approximation to a sinewave Transfer Time 6 ms typical : 10 ms maximum Input Input frequency 50/60 Hz +/- 5 Hz Auto-sensing Input voltage range for main operations 170 – 280V