... technology (PWM). It could reduce noise and power loss, to ensure users can load in a ... enlarge the capacity, but also permit different power and different times of the UPS could be ... relays, emergency switching device EPO input interface. 7)Low-power dissipation but high-efficiencyTo achieve more than 98% ... +X can be in parallel with different power capacitySoftware InterfaceWindows9X,2000,NT,Me,XP,Linux, ...