SPT 2-Gallons Ultrasonic Humidifier, 2 Gallon, Multi Cool mist ultrasonic technology, high humidity output, silent operation Moisture output=2. 3-galllon/day, designed for rooms up to 500 square ft. Pilot light and water refill indicator, auto shut-off protection to the ultrasonic generator only, fan will continue to run Convenient carrying handle, Easy refill plug with no-drip feature No-slip feet, tell certified