... accuracy, performance, stability, security, energy-saving. Handsome in appearance, a wide range of input power, space-wave distortion and so on.3. Appliance ... , air conditioning, Internet4. Main parameter: Input voltage140/150VAC~270VACPhaseSingle-phaseFrequency50-60HZAdjusting time≤1S(input voltage varies 10%)Max of Capacity500VA,1000VA,1500VA,2000VA,3000VA ...