Pepperl+fuchs Phototalk

In this first episode of PhotoTalk, the basics of photoelectric sensors are covered, starting with: What is a photoelectric sensor?  A photoelectric sensor is a device that detects the presence or absence of light.  Not just ordinary room or sun light, but its own transmitted infrared or visible red light.  Photoelectric sensors are available in the following light source types: - Visible red LED - Infrared LED - Visible red laser - Infrared laser