... and delicate of applications. a).Sine-wave outputTrue sine-wave output with less than 3% THDb).Double conversion designZero transfer/ ... modeWorry free battery management. The unit turns itself off after ten seconds to conserve battery power when ... versaLED indicatorsStatusLoad level/battery level, battery , utility power, inverter, bypass, overload, faultAudible alarmBypass, on battery mode, battery ...