Preliminarily set at open-closed at 8.00-19.00 and can be set to meet the requirements of the air should not be used for more than 12 hours overnight to make air deterioration faster usage.
Initial set - off at 8:00 to 19:00, and the time can be set as required. By the time the air should not be used longer than 12 hours will air deterioration applications faster.
Preliminary time open - close 8.00-19.00 and can be set as defined. The lack of air too long should not be used 12 hours will use air deteriorate faster.