The Digital Ultrasonic Humidifier by Comfort Zone has digital controls with full function remote. It also includes an easy to use digital auto-off timer with power indicator light. The adjustable mist intensity with dual adjustable mist vents allows for personalized comfort. Provides up to 20 hours of whisper quiet operation when on the lowest setting. With low power consumption, this filter-free humidifier has an automatic shut-off function when the tank is empty. Recommended for medium size rooms.