Voltage: 220-240V ~ / 50Hz Total wattage: 1650watts Dimension: 245mm (H) x 220mm (W) x 125mm (D) Weight: ±2kg On/Off Switch: Automatic Infrared Sensor Sensing Range: 10-20cm, ±5cm adjustable Air Temperature: 20-55C Operation Duration: 60-80 second with auto cut off Air Velocity: 11.8m/s (50Hz) Motor Type: Induction Brushless Motor 2910rpm (50Hz) / 100W Packing: 4 units/ctn