The peristaltic pump is designed to dispense low volumes of Eucalyptus or other approved fragrance. Installation is simple and start-up is simplified with a push-button primer. The Aroma-Guard 2 Series features an exclusive quick release twist-off head, built-in timer and a self lubricating roller assembly. The Aroma Guard 2 is also 7 day programmable to work your commercial facility’s hours of operation.