... for HOme and Office Applicances 3.High Frequency 4.Full automatic InverMax 500/1000/2000VA power inverter 1.INVERMAX ... -AC inverter with auto line-to-battery transfer and integrated charging system, serving as an extended run UPS, a standalone ... audible alarm for the low battery, overload, overcharge and fault14. full protection against deep discharge, overcharge, overload protection, short circuit, ...