... range makes UPS suitable to different power supply devices, i.e. generator set.2. Flexible Configuration on DemandHigh Scalability ... protection and clear alarm notification function in case of I/O over-voltage or under-voltage, battery over-charge or ... " user adjustable to "YES"Transfer Time ZeroIndicatorsLED DisplayUPS status, I/P & O/P voltage& frequency, Battery voltage, Battery capacity, Loading, ...