... Applications:Computers, test equipment, lighting systems, safety alarm systems, X-ray systems, communication systems, medical equipment, duplicators, stereo sound equipment, ... performance:Input electric voltage scope: 160-276VConversion time: zero-interruptionInput frequency scope: 50Hz±5%Noise: distance of 1 meter ≤45- ... of the capacity in 8hrs Ambient temperature: 0-40°C High Frequency UPS