FEATURES: Microprocessor control Automatic Voltage Regulation Emergency power backup protects your valuable data and computer hardware Short Circuit & Overload Protection Cold start function *Customize option. Contact Vmark for specifications and availability Over charge & over discharge protection Smart Audible & digit icon Alarms Fax/modem/tel protection port User replaceable batteries Surge, Spike and Lightning Protection* Intelligent UPS power management software* Global Voltage Customization* 220V/230V/240V/110V/115V/120V Power:500VA/650VA