... transported by vehicle or is in a place without AC/DC power supply.I.Features1,Long life piston ... kinds of electrical sources, AC100V~240V 50/60Hz, external DC12V,and internal battery, it can be conveniently used ... is working or being attached to AC 100V~240V 50/60Hz or external DC 12V power supply. The capacity ... 65 dB(A)6,Operating voltage: DC 12V or AC 100V~240V, 50/60Hz7,Power input:110VA8,Battery ...