Use methods1. 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 spray 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 minuteson--The fan keeps turning;off--The machine is not working.Power supply: 2 x AA batteries (not include)Type: automatic air freshenercolour:whiteMaterial:plasticsize:215 x 91 x 80mmPackage Contents:2 x automatic air freshener2 x User ManualOnly the above package content, other products are not included.Note: Light 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.