... load,with superior load capacity,Perfect protection fuction:overload, short circuit, low battery voltage, improper operation etc,which won’t ... and three phase load at the same time 10.LCD display and buzzer tips . 11.Adopting SMT Craft 12.Elegant ... Frequency50HZ±1%Wave formPure sine waveTHD≤3%Protection functionoverload,short circuit,low battery voltage,high/low AC mains voltageOverload capacity100- ...