HEALTHIER & 4X EFFICIENT HUMIDIFY: In warm mist mode, the steam humidifier offers healthier and cleaner mist by PTC area heating water up to 212℉. The warm mist humidification can balance heated air in cold weather 4X faster, and with ultrasonic technology, you won't even notice the machine working while keeping your skin moisturized and home safer humidity level. SAFER FOR BABIES & PETS: Though the humidifier PTC area boiled the water, it release only 122℉ warm and fine mist, which is safe for home with babies and pets. Enjoy healthier and safer mist from now on! CUSTOMIZE YOUR HUMIDITY: We upgraded the built-in sensor to a more precise external one, which can better detect the ambient humidity and adjust mist speed on time (when your desired RH reached, the machine will stop running). 40%-90%RH and 3 mist speed levels available for your different demands. Always keep your room’s relative humidity as you wish. GOOD SLEEP HELPER: The large 5 liters water tank provides up to 50 hours of fine mist, allows you sleep soundly and safely every nights with the auto-shut off feature, display off design, and as low as 20dB nearly silent operation. (in cool mode level 1, warm mist mode is not recommended to use during sleep and night, because of the noises of boiling water). ) HUMIDIFY EVERY CORNER OF YOUR ROOM: With a maximum 500ml/H mist output, the air humidifier can cover an area of 753 sq.ft, suitable for the living room, bedroom, kids room, greenhouse, etc. HUMIDIFIER & DIFFUSER 2 IN 1: This vaporizer humidifier comes with an aromatherapy box, adding drops of essential oils to the aroma sponge, then you can enjoy comfortable humidity with pleasant scents even in dry weather. EASY REFILL & CLEAN: No need to be tired of flipping over your tank and spilling water with our upgraded top-fill design - pour water directly from the top opening. Detachable parts and included brush allow you thoroughly clean the humidifier.