... communication port 4.Optional SNMP card Key Features1.Single phase in, single phase out2.Microprocessor control3.True on-line double conversion ... backup time10.Generator compatible11.Cold start12.Load/Battery power meter display13.Overload, on-line, battery status LED/LCD14 ... 0.3% PhaseSingle phase + GND THD< 3% (linear load), < 5%( nonlinear load) Power Factor0.8 Short Circuit ProtectionCurrent limit, ...