The Aqualine 12L Dehumidifier will dehumidify indoor environments. For drying out an area, it can be set to dehumidify constantly. If a target Relative Humidity level is set, it will operate as required to maintain the selected humidity level. The unit can be timed to switch on or off after a certain period of up to 24 hours. If discreet operation is needed, such as during the night, it can be set to Quiet Mode, which dims its display and uses the quietest fan speed.