UPS is a regulated power supply, that UPM is what?
UPS is not a regulated power supply, is uninterruptible power supply.
UPM power supply system can convert the mains 220V into DC 48V, a total of 220V / 48V power conversion
Box and battery box composed of two parts.
UPM: UninterruptiblePower Module; uninterruptible power supply module
UPS: Uninterruptible Power Supply; uninterruptible power supply
I do not know what the difference, waiting for the master
