Beam Smart Ultrasonic Humidifier White with Remote Control and Smartphone App. The 5-liter water tank is suitable for rooms up to 40 m². Meet Beam 2: the powerful humidifier with a minimal footprint. With a water tank capacity of five liters and a high mist output of 350 ml per hour, optimal performance is always guaranteed. You can refill Beam 2 from the top - as easy as watering your plants. Thanks to the built-in temperature sensor and hygrometer, you can always keep an eye on the air quality in your home. The control panel also serves as a remote control and can be stored in the device. With the new Duux app, Beam 2 can be used anytime and anywhere.