Thank you for viewing. This is a stand-alone humidifier. It was used for 2-3 months. It has a large capacity and can continuously humidify a space of approximately 14.5-24 tatami mats (approx. 25-40 square meters) for 20-60 hours. In addition, compared to conventional large-capacity humidifiers, it is ultra-quiet, operating at 26dB (quieter than a library), making it the quietest class in the industry, creating a comfortable indoor environment without disturbing sleep. It has a dry-running prevention function, and the NTC protection system automatically stops when the water runs out. It also automatically stops in case of high temperatures or short circuits, allowing you to use the humidifier safely. [Product Specifications] Operating Voltage: AC 100V-120V 50/60Hz Power Consumption: Minimum: 15W Maximum: 25W Water Tank Capacity: 6.0L Humidification Volume: Minimum: 60ml/h Maximum: 300ml/h 1M Mist Height, Dry-Running Prevention, 60 Hours Continuous Humidification, LED Light, Energy Saving TT-AH025 Thank you.