1 Inverter manufacturer 2 Production Degree:IP65 3 Efficiency:95% 4 Warranty:5 ... .Office space: computers, printers, copiers, scanners, digital cameras, etc;4.Power tools: saws, drilling machines, punching machines, air compressors, etc;5 ... of grid-type is not to worry any power waste, because by connecting inverter to grid, it can save any surplus electricity ...