APC Back-UPS 1600VA, 230V, AVR, Universal Sockets, BX1600MI-MS. Output Power Capacity: 900 Watts / 1.6kVA. Nominal Output Voltage: 230V. Topology: Line Interactive. Waveform Type: Stepped approximation to a sinewave. Output Connections: 4 Universal outlets. Input Frequency: 50/60 Hz +/- 5 Hz Auto-sensing