... modem / telephone protection port10) User replaceable batteries11) Intelligent UPS power management software12) Global voltage customization: 220V, 230V, 240V, ... 165 - 275V2) Output: AC 220V+/-10%3) Frequency: 50 / 60Hz4) Transfer time: 6ms5) Battery: 1 x 12V, ... 40o8) Operating humidity: 10 - 90% RH, non condensing9) Power: 500VA, 650VA, 800VA, 1000VA, 1200VA Online UPS(Uninterruptible Power Supply)