... & earth groundRated voltage220/230/240VACPower factor0.8Voltage precision±1%Normal mode45~55(adjustable)Battery mode50±0.1HzInverter overload ... level<45dB@1Meter<50dB@1MeterOperating temp.0-1,500m @ 0-40°C / 1,501-3,000m @ 0-35 °CStorage ... , non-condensingOperating elevation3,000 metersPhysicalInstallationRack & Tower (2-in-1)Dimension (DxWxH)395x110x260mm(for UPS); 425x110x260(for Battery pack)Net ...