The SSS Alero 3000/9000 Metered Air Care Dispenser delivers scheduled bursts of fragrance from either a 3000 spray or 9000 fragrance refill. A large LCD screen displays a countdown to the next spray and lets the user program start/end times and days of operation. The Intensity Plus Event Timer adds extra sprays during busy periods, and an upward-hinge design simplifies refill changes. A lock feature helps prevent theft of refills and batteries. Runs on 2 C-cell batteries, rated for up to 3 years of battery life.