Two modes optional
1.Continuous spray: Press the power button and then the humidifier start work. Time off: 4 hours, the humidifier will be automatically shut-off.
2.Intermittent spray: Press the power button again after the humidifier start work. 2 seconds for each spray and 3 seconds for each stop. Time off: 6 hours, the humidifier will be automatically shut-off.