Perfect humidifier for home, large room, office, greenhouse and warehouse. Each purchase is 1 unit. 5.5L large-capacity water tank, continuously humidified for 24 hours; LCD intelligent large-screen display; intermittent spraying, three modes are optional; one-key sleep mode; intelligent aointment and timing functions The built-in box Essential Oil Compatible, you experience can directly add a few drops of your favorite essential oils for a spa-worthy The large capacity bedroom humidifier produces a near silent frequency (≤35dB) ensuring extremely quiet operation for a full night of sleep. The machine will automatically work on maintaining the humidity. The humidifier will turn off when the desired humidity is reached and will turn on again when the humidity drops to prevent unit damage and keep you safe.