Mooka Cool Mist Humidifier with Humidistat, Smart Control Air Humidity, Easy Clean Top Fill 4.5L Large Tank, Ultrasonic Humidifiers for Plant, Baby, Office, Home, Bedroom, Large & Small Room, 3 Mist Level, Sleep Friendly, Quiet and Concealed, No Filter Required, Auto Shut-Off, 14-40 Hours per Fill Using TIPs -- Important: Be SURE to remove all protective styrofoam before first use or it will cause leakage. -- If used to lift humidity in the whole room instead of a certain corner, please set humidity level ~10% higher than desired level to allow humidity to spread evenly, considering the humidity around the humidifier rises faster than where distant from the humidifier. -- When the water runs out or when the tank is lifted off, the humidifier will 'beep' and go into standby mode automatically to avoid safety issues. If it does not go into standby mode, please contact support team. -- Always avoid placing near electronics or furnitures subject to water damage in case accident happens.