Top Fill 9L/2.4 gallon large water tank ultrasonic air humidifier and reading strip, 300ml/hour output covers 600 sq ft and last for up to 50+ hours, 360° rotating nozzle can change the spray direction according to needs, top filling design is convenient for replenishment, easy to clean, suitable for home, babies bedroom, kids rooms, living room, office, plants. The smart humidifiers can customize the humidity. When the room humidity reaches the set value, the humidifier automatically stops, and when it is lower than the set value, it automatically starts humidifying. The humidifier has 3 adjustable atomization speeds with medium, high and super high, You can also set a timer (0-12 hours) to turn off the humidifier. LED indicator can intuitively display the current humidity, touch control is convenient for users, the sound is lower than 35dB during night operation, all lights can be turned off in sleep mode, allowing you and your baby to have a whisper quiet sleeping environment. When the water tank is empty, the humidifier will automatically shut off to prevent damage and ensure your safety.