... batteries into units 3.Put in the aerosol refill 4.Set time interval from 7.5/15/30/60mins 5 ... .Set operation mode with inner switch(OFF,24H,DAY, NIGHT) ,and ... time 7.Power switch display-by LED light 8.Automatic spraying 9.Time-set spraying(7.5,15.,30,60mins) hot selling ...