ultrasonic humidifier touch control 4 adjustable steam levels LED temperature and humidity display ionization function for air purification aroma atomizer adjustable humidity: between 45-75 percent control lamp 330ml/hour capacity 4-liter tank 14-15 continuous mode 12-hour timer automatic switch-off water level measurement removable water tank maximum: 50-60 m2 rooms quiet mode: 35 dB (A )low consumption: 30 W dimensions: ma: 33cm, width: 20cm, depth: 10cm weight: 3 kg 2 year warranty Ultrasonic humidifiers: Ultrasonic atomizing devices atomize water into tiny droplets and blow out a cloud of white mist and steam. This process is a method of cold humidification. This procedure is performed at a high frequency with rapid vibration. The small quartz plate at the bottom of the device operates at 1.4-1.6 million vibrations per second. The atomized water droplets go into a pipe. The liquid turned into a mist is sent into the room with the help of a silent fan, where it evaporates. The intensity of humidification (the strength of the blow) can usually be controlled on all ultrasonic devices. The atomizing unit itself atomizes everything that is in the water, which is why it is necessary to treat the water. Most ultrasonic devices have a water softening cartridge or some kind of filter insert, ceramic insert, which filters out minerals dissolved in the water.