Automatic sliding doors used in both interior and exterior application, Passive infrared ray to detect or RF radar sensors to activate their motorized function to opening and closing. These sensors are mounted over the automatic door frame or are integrated into the door framing from above or side by side. PIR sensors allow you to sense motion The sensors use either infrared or microwave technology to observe motion and are often used in commercial and industrial settings to allow ease of access from both side of the entrance for efficiency and safety.