Rating 650VA (W) 390W Input Voltage (V) 160+10% Output Frequency (Hz) 50Hz+10% Transfer Time (ms) <6ms Voltage AVR Mode 230V AC Nominal Output Waveform Quasi Sine Wave (Battery) Sine Wave (Mains) Battery Type Sealed Lead Acid Maintenance Free Recharge Time 90% Capacity After 5Hours Backup 7-15 min ( depending on the connected Load) General Protection Under Voltage, Over Voltage, Spikes, Surge Su Energy 320 Joules Instantaneous Response Test Standard IEEE587 Cat A&B Noise Filtering EMI/EFI Full-time Suppression Output Sockets Universal Sockets Panel Display Mains On, Mains Full, Battery Low Noice <0 - 45 db (1Miter) Temperature 0~40C Humidity 20~90% (Non - Condensing) Dimension (L/xWxH),, 287 x 100 x 145