... protectionPerfectly system protection functions: It has AC over-voltage, under-voltage, output over-voltage, under-voltage, output overload, ... relays, emergency switching device EPO input interface. 7)Low-power dissipation but high-efficiencyTo achieve more than 98% of ... set system parameters, date, output voltage, battery capacity, alarm function, light-load shutdown, system boot time, MODEM settings ...