This automatic air freshener unit is suitable for all our automatic dispenser refills. It has a modern compact design, and is easy to install and operate. The timed spray frequency can be set anywhere from 5 to 25 minute intervals, and the infra-red sensor gives day and night options. The refills for this unit feature four pleasant fragrances which destroy unpleasant odours, leaving behind a fresh fragrance and pleasant atmosphere. A very useful piece of odour control equipment.