DOUBLE SPRAY & HEAVY MIST HUMIDIFIERThe plant humidifiers independently controlled double spray design enables spray output up to 70ml/H. The humidifier uses ultrasonic atomization technology to form nano-scale mist that effectively moisturizes the skin. PLANT HUMIDIFIER 3 ADJUSTABLE SPRAY MODESThis humidifier has three adjustable spray modes and it can be adjusted according to different weather conditions and ambient humidity. The single spray mode operates for 12 hours with 35ml mist per hour. The double spray mode operates for up to 10 hours with 70ml/H. The intermittent mode works for 8 hours. This humidifier is silently quiet with working noise under 20db (quiet than air conditioning) so that you can sleep or work without interference. It is the ideal humidifier for quiet indoor use and suitable for sound-sensitive people. AUTO SHUT-OFF FUNCTIONhumidifiers for plants In single spray mode, the humidifier will work for 10 hours and then automatically shut off. In double spray mode, it will work for 5 hours and then automatically stop operation. There is no need to worry about the damage of the humidifier itself or the danger to the user. Color:White