... demands. Application:Servers, data center critical network devices, sensitive electronic equipment, telecom, bank, hospital, bureau, traffic, public ... Range46-64Hz: 50Hz, 60Hz auto sensePhaseSingle phase with GroundThree phase (4 Wires+Ground) Power Factor>=0. ... mode, Battery low, Overload, FaultAcoustic noiseAt 1 meter distance<55dB<60dBCommunicationsIntelligent RS232 serial portWindows 98/NT/ ...