With innovative technology for air care, the Microburst 3000 Dispenser is completely self-powered by any indoor light source, eliminating the need for alkaline batteries. LumeCel rechargeable energy system operates on both artificial and natural light for at least 15 years. Battery-free dispenser is easy to use and ready for use right out of the box. It's also virtually maintenance-free, reducing the potential of workplace mishaps or accidents. Easy, flexible programming delivers maximum cost control and caters to your needs. Scent placement indicator with optional audio tone proactively shows how many days to refill. LumeCel's rechargeable energy cell and solar panels are 100 percent recyclable for a positive environmental impact.