Need to add 100% pure essential oil to use, do not add water 1: Press MODE to enter the mode setting. After entering, the top blue light will light up and flash, representing 7 days a week. (The lighted representative will work) Press +/- to adjust the working date 2: Press the MODE button to enter the first mode setting (the machine will display 1) 3: Press SET key to enter the first mode time setting The time will be displayed above, this time is the time when your machine starts to work. Press the +/- symbol to adjust the time Press the SET key to enter the minute setting for hours. 4: Press the SET button to enter the machine shutdown time setting, and the shutdown time can be adjusted according to personal habits. 5: Press the SET button again to enter the working time of the machine. The time can be adjusted. The longer the working time, the higher the concentration of essential oils. A single working time can be set to intelligently adjust according to personal preferences. 6: Press the SET button again to enter the pause time for a single operation of the machine, the shortest is 5 seconds 7: Press MODE to enter the second intelligent time period setting. 8: There are a total of four time periods to intelligently set the working time and shutdown time of the machine. Repeat the above settings if necessary. It is also possible to set only one time period and set it according to personal needs. 9: There will be a slight noise when the machine is working. It is the sound of the internal drive of the machine, but it is not obvious. There will be a slight noise when the machine is working. It is the sound of the internal drive of the machine, but it is not obvious, please don't mind.