WESPC Original GV25 MKII Generator Digital Meter Voltage Current Tester Panel Power 110V,220V system:AC85~265V,50/60Hz Power 380V system:AC360~440V,50Hz Consumption MAX 1W Operation temperature -20℃~65℃ Size(W * H * D) 78mm*78mm*63mm Cutout(W * H) 67mm*67mm Protection level IP54 (the front face after installation) Weight 200G Summary GV25 MKII is one updated version of GV25 meter for checking and displaying AC Voltage, Frequency, Current, Power, Power Factor and running time