Use methods 1. Intelligent sensor light, which can automatically sense the presence and absence of light according to the light source, and can be set appropriately according to the needs of the occasion when used: If you want to start spraying in the light period, adjust to the "day" gear; If you want to start spraying in the dark period, adjust to the "night" gear; If you want to 24 hours, adjust to the "24h" gear. 2. The interval of automatic spraying can be set: 2 / 2--The fan rotates for 2 minutes and stops for 2 minutes; 5 / 15--The fan turns for 5 minutes and stops for 15 minutes on--The fan keeps turning; off--The machine is not working. Power supply: 2 * AA batteries (not include) Type: automatic air freshener colour:white Material:plastic size:215*91*80mm Package Contents: 1 * automatic air freshener 1 * User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.