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Air-O-Swiss AOS 7135 Cartridge Humidifier, Tank, Ultrasonic - Warm and Cool Cover Even Larger Rooms - Humidifies The Air In Rooms Up To 650 Sq Ft (60m2) With 2 Easy Selections For Your Comfort - Make The Choice Of Cool Or Warm (104 °f (40 °c)) Humidification Save More Energy With Sleep Mode Function: The Unit Pre-determines A Comfortable Night Humidity Level (timer = 8 Hrs, Warm Mist On, Itc(tm) On) Made Of High Quality Materials For Long Last Use - Industrial Strength Titanium Membrane Surface Dimensions: 15.2 X 8.8 X 15.4 Inches Description AIR-O-SWISS 7135 Ultrasonic This Digital Warm & Cool Mist Ultrasonic humidifier uses high-frequency vibrations to turn the water into a micro-fine mist that creates a comfortable environment in any room. Choose the pre-heating function and mist exits the appliance at a pleasant 104 °F. ITC technology (Intelligent Temperature Compensation) monitors the temperature and automatically adjusts the output when conditions change. A replaceable demineralization cartridge (Ag+ Ionic Silver Technology) ensures a water mist without lime scale or mineral residues. The included Hydro Cell provides constant freshness in your humidifier. Functions: Digital Technology Digital display with built-in hygrostat to regulate desired humidity level in the room Warm or Cool Mist Choose between warm or cool mist to maintain desired room temperature Whisper-Quiet Whisper-quiet performance to ensure a peaceful night's sleep