How Does a Photo Sensor Work? | Photoelectric Sensor Explained for Beginners | PLC Automation
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How Does a Photo Sensor Work? | Photoelectric Sensor Explained for Beginners | PLC Automation
A photo sensor (also called a photoelectric sensor) detects the presence or absence of an object using light. Working Principle: The sensor emits a beam of light (usually infrared or visible light). When an object comes in front of the sensor: The light is blocked, reflected, or received depending on sensor type. The sensor’s internal ...
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