Home Appliances Design Aura Cebilon Unique Reverse Osmosis System by Asst. Prof. Ömer Kamber It is more compact and filter change are very easy according to its peers. Life of the filters can be set and checked as gallon. Water passes through the filters are calculated and set value of the filter life starts to decrease. When the filter lives finish, it gives change time warning. In peers, even if the device is little-used, filters are changed at fixed interval. In this case it prevents the unnecessary filter change. In the case of water leakage, it gives warning and prevents flood. It was designed based on only original filter change so it prevents imitated cheap filters changes.