APC Smart-UPS RT 20kVA RM 230V (SURT20KRMXLI) - Capacity: 16.0kWatts / 20.0kVA, Input Frequency: 40 - 70 Hz Auto-sensing, Output Frequency: 50/60 Hz +/- 3 Hz user adjustable +/- 0.1 Hz Sync to mains, Input Voltage: 160 - 280V, Output Voltage: Configurable for 400 or 415 V 3 Phase nominal output voltage, Connectivity: DB-9 RS-232, RJ-45 10/100 Base-T, Smart-Slot, Expected Battery life: 3-5 Years, Colour: Black