The Omron F3SG-4RE0960P14 Safety Light Curtains Photoelectric Switch is a safety device designed to detect and protect personnel from injuries caused by machines or equipment in manufacturing or material handling environments. The device consists of a pair of light beams emitted by an infrared LED on one side, and a receiver on the other side. If the two beams are interrupted, an output from the receiver will be generated. This switch is particularly useful for situations where personnel inadvertently come too close to danger zones, or for controlling the motion of a machine or robot arm. The F3SG-4RE0960P14 Photoelectric Safety Light Curtains are reliable in performance, highly precise in detection and provide a superior level of safety for personnel in manufacturing or material handling environments.