An automatic sensor door uses sensors like PIR or ultrasonic to detect movement and automatically open and close. When movement is detected, the sensor sends a signal to the door controller which activates the motor to open or close the door. It then closes automatically after a set time if no further movement is detected. Automatic sensor doors provide convenience, accessibility for disabled people, hygiene by reducing touching of handles, and security. However, they have higher installation and maintenance costs and may produce false alarms. Overall, automatic sensor doors are a good option for businesses seeking convenient, accessible control of access to facilities.