Air freshener dispenser delivers improved aesthetics, performance and battery cost savings to your facility while providing more flexibility and control over your air care dispensing. Simplified user interface allows you to customize the dispensing minute intervals: 7.5, 15 or 30 minutes. Light sensor allows flexible programing when needed so you can choose from the following settings: Light, Dark or both. Removable magnetic lock requires you to open the unit with the included magnetic key to prevent unauthorized access to the fragrance canister. Battery-operated construction requires two AA batteries for up to a year of performance, or accepts four AA batteries to provide up to two years of performance. Dispenser is designed for use with compatible TimeMist metered air fresheners (sold separately).