Features: Automatic voltage regulation Emergency power backup protects your valuable data and computer hardware Short circuit and overload protection Smart audible and digital icon alarms Fax/modem/telephone protection port User replaceable batteries Surge, spike, and lightning protection (customize option) Intelligent UPS power management software (customize option) Global voltage customization: 220, 230, 240, 110, 115 and 120V Specifications: Input: AC 165 to 275V Output: AC 220V +/- 10% Frequency: 50Hz/60Hz Transfer time: ≤ 10ms Battery:12V/7.0Ah sealed lead-acid battery Charge time: < 8 hours Operating temperature: -5 to 40 degree Celsius Operating humidity: 10 to 90% RH, non condensing Power: 500VA Measurement and net weight: 227 x 98 x 220mm, 5.30kg (UPS-500E)