The Zep MicroTech fragrance system sets a fresh new standard in air care. Easy to use, compact and durable, this delivers effortless freshness in your home, office or business. The kit contains everything you need to automatically freshen up any space: a microtech dispenser, batteries, mounting hardware and 1 crisp plus clean professional air freshener. Adjustable 7.5-minute, 15-minute and 30-minute timer settings Indicator light flashes when battery is low or fragrance refill is needed Fragrance contains essential oils to ensure they are the longest-lasting and highest quality fragrances on the marker Fragrance and odor counteractants in one can to eliminate offensive odors 60 Days of continuous use at 30 minute intervals