Radwell International’s Blog

What is a Photoelectric Sensor?

Photoelectric sensors are able to detect objects using a light transmitter and a photoelectric receiver. These sensors can assess their surroundings and process the distance of an object and recognize if the object is nearby or absent. Also referred to as the “Photo Eye”, these systems detect a change in light instantly and can easily be incorporated into a variety of different equipment. There are three main ways photoelectric sensors utilize target detection; through-beam, retro-reflective, and proximity or diffused mode.