... control. 2.Large airflow.Environmental, no freon. water curtain air cooling unitSpecificationAirflow:4000m3/h Power Supply:220V/50HZ ... touch screen controller4.Intelligent remote control5.Large-capacity water tank, about 12 hours continuous operation6.Antimicrobial ... and maintenance freeWet curtain: imported paper adopted, good water absorption, high evaporation efficiency, specially formulated glue, ...