For control panels only, excluding any swing door operators Soft start/slow stop; with self-shutdown function. Adjust the knob to adjust the sensitivity to obstacles: adjusting VR1 clockwise can reduce the obstacle sensitivity of motor 1; adjusting VR2 clockwise can reduce the sensitivity of motor 2 to obstacles. Infrared connection infrared photocell function: During the closing process, when the infrared rays of the infrared sensor are covered, the door will open immediately to protect the safety of users and property. The distance between the photocell receiver and the photocell transmitter should not be less than 2 meters; otherwise it will affect the induction of the photocell., Manufacturer: CUIchwWE