Features:1) Rated voltage: 110/220V2) Rated frequency: 60/50Hz3) Input power: 3 - 4W4) Input current: ≤40/≤20mA5) Output speed: 2 - 2.5rpm6) Noise: ≤40dB7) Temperature rise: ≤65k8) Insulation resistance: ≥100MΩ9) Resistance to pressure: 1,500V;, 50Hz-min