... high or low voltage of utility power, voltage sags or damped oscillation, high-voltage pulse, voltage fluctuation, surge voltage, harmonic distortion, ... function in case of I/O over-voltage or under-voltage, battery over-charge or under-voltage, overload, and short circuit.5. ... DisplayUPS status, I/P & O/P voltage& frequency, Battery voltage, Battery capacity, Loading, Fault codeAudible Alarm Bypass ...