... the same time ♦ LCD display and buzzer tips .♦ Adopting SMT Craft♦ 12.Elegant design ,attractive and durable♦ AC mains ... formPure sine waveTHD≤3%Protection functionoverload,short circuit,low battery voltage,high/low AC mains voltageOverload capacity100-150% overload for 20 ... Then turn off; 150% overload instant off.Faultthe machine switch to bypassLow battery voltage1 emergency alarm for 1 second, the ...