... PWM technology controlled by CPU to offer true RMS value output.Offered with microprocessor control Real time management and monitor ... activated. (Fault indicator is on, and buzzer keep alarming), no outputBattery modeFault indicator is on, and buzzer keep alarming ... 110%. (Fault indicator is on, and buzzer keep alarming), no outputprotectionBattery modeKeep alarming when load ranges from 110% to 130 ...