Utilizing its patented fluid delivery system, the T Cell's fuel cell technology delivers a precise dose of a wide variety of fragrances for 60 to 90 days without the use of batteries. System contains no propellants or added VOCs. Precision dosing delivery system; one dispenser covers approximately 3 to 4 stalls/fixtures (6, 000 cubic feet). Sleek, attractive cabinet design will fit any decor. Fan-operated, for areas with poor airflow. Passive Dispenser using fuel cell technology requires no batteries and operates silently Fan Dispenser operates on 2 D-Cell batteries. Contains Micro trans Odor Neutralizer to eliminates odors. Lifetime - Fully against defects of parts and workmanship.