UPS topology Standby (Offline) , Output power capacity 0.9 kVA , Output power 540 W , Waveform Stepwise , Input operation voltage (min) 161 V , Input operation voltage (max) 284 V , Input frequency 46/70 Hz , Output frequency 50/60 Hz , Number of input phases 1 , Number of output phases 1 , Efficiency 97 % , Surge protection Yes , AC outlet types C14 coupler , USB port Yes , 1xEthernet LAN (RJ-45) ports , Battery voltage 12 V , Form factor Tower , Colour Black , Display type LED , Operating temperature (T-T) 0 - 40 °C , Operating altitude 0 - 3000 m , Weight 4.4 kg