What is photo eyes?

Photo eyes, also known as photoelectric sensors, are devices that use a beam of light to detect the presence or absence of an object. A transmitter emits a light beam (typically infrared or visible light), and a receiver detects that beam. When an object interrupts the beam, the receiver detects the change and triggers a response. They are commonly used in industrial automation for object detection, conveyor systems, security systems, and automatic door openers.