Features n Pure sine wave output (THD < 3%) R Load n By pass function n Output frequency : 50 / 60Hz switch n Low power 揚ower Saving Mode ?to conserve energy n RS ?232C interface / remote controls port / Wire connection to PC n Wired Remote control n Thermostatically controlled cooling fan n Advanced microprocessor n Protection : Input low voltage Overload Short circuit Low battery alarm Input over voltage Over temper n 2U high