Safe and easy to use, they are suitable for any entrance, from simple opening and closing to providing a hermetic seal. It can be also applied to framed or frame-less glass door. With specially-designed aluminum track and cover (standard length, could be cut as per customer’s need), noise free round type brush-less motor, non-digital and/or digital microcomputer controller, 24G microwave induction sensors. Optional remoter control device or function keypad, it is commonly used in modern life.