... machine, paper shredder, projector, etc.Home device: TV, video recorder, sounding device, DVD display device, VCD display device, fan,lighting, and refrigeratorTravel use: outdoor ... screen: shows battery voltage and working status.Electric leakage protection device: Avoid any electric leakage danger.Working theory: From DC ... the inverter’s power should be setted accordingly. 2.5KWh Storage Batteries