... PhaseFrequency50Hz/60HzResponse TimeWithin 0.5 seconds against 10% input voltage deviationTemp.RiseLess than 75Ambient HumidityLess than 9%(rated humidity) ... fast starting, quick reponse,fully protection,high precision output voltage.2.Application:Computers,Duplication,Illumination system,Medical instrument Refrigerator, ... our second large market, Europe market. GSVC-500W Automatic Voltage Regulators