Summer heat is often unpredictable. Keep cool, no matter what with this HOMCOM 16-31℃ air conditioning unit. Four modes with this AC unit: switch between cool, ventilate, dehumidify and sleep - pick a setting which suits you. 'Cool' keeps the area at a constant temperature, 'ventilate' controls the speed of the fan, 'dehumidify' dries out the moisture in the air and 'sleep' gradually increases the temperature every hour. Use the timer to turn it off when you want.