Operation Theory: Hygiene Seat Covers is controlled by a built-in Circuit Board, it will automatically change the disposable film cover for exactly one round, and the used film will be destroyed by a cutter to ensure one time use, so the used plastic rolls can never be re-used.
Just by pressing the stainless steel button or putting your hand before sensor device before your usage, the roller will activate automatically to replace the used seat film with fresh one to ensure a new toilet seat for your every usage, which is much easy & convenient.