... :10A--30A it can drive AC,refrigerator,with RS232,SNMP Home UPS1,INPUT voltage rang :90v-280v,2,with four -steps ... it can drive computer,ATM.5,with RS232,SNMP.6,Output pure sine wave7,Has CE , ISO certificate8,protection against short-circuit ... the mains come, it willl start the unit automatically. Pure sine wave Home UPS