Curtain photocell is one of the most important safety components of elevators. This system uses light curtains to ensure the safety and security of elevator users. The main features of the elevator curtain photocell are as follows: Structure and Function: A photocell is a curtain consisting of one or more light curtains that are placed in the elevator door opening. These curtains cover the area of ​​the elevator door using infrared or laser radiation. If the light curtain is interrupted, the elevator control system detects it and stops the door.