... demanding and delicate of applications. a).Sine-wave outputTrue sine-wave output with less than 3% THDb). ... crashes. Technical specifications: ModelH1KSH2KSH3KSRated powerVA/W1KVA/0.7KW2KVA/1.4KW3KVA/2.1KWInputNominal voltage220VACVoltage range115~ ... vice versaLED indicatorsStatusLoad level/battery level, battery , utility power, inverter, bypass, overload, faultAudible alarmBypass, on battery mode, ...